PhoneDB - infinitely detailed




FacebookGoogle PlusRSS FeedTwitter

Device Specs: Referred (not editable) comparison sheet [15]

If you would like to add more datasheets to the comparison table you can still find and add them around the site while browsing, querying or searching Device Specs. Meanwhile you will not lose the comparison table below. Furthermore unnecassary datasheets can be removed by clicking on the "Remove from comparison" buttons (ever more than one item during one page load) but in this case reloading the table will be needed. Then click again on the appropriate header "Compare" button.
RIM BlackBerry 7100i
RIM BlackBerry 7130c
RIM BlackBerry 7130g
RIM BlackBerry 7130v
RIM BlackBerry 7130e
RIM BlackBerry 8700c (RIM Electron)
RIM BlackBerry 8700g / 8705g (RIM Electron)
RIM BlackBerry 8700r (RIM Electron)
RIM BlackBerry 8700f (RIM Electron)
RIM BlackBerry 8703e
RIM BlackBerry 8707g
RIM BlackBerry 8707h
RIM BlackBerry 8707v
RIM BlackBerry Pearl 8100
RIM BlackBerry 8700v (RIM Electron)
Use the following link to refer to this comparison
RIM BlackBerry 7100i
RIM BlackBerry 7130c
RIM BlackBerry 7130g
RIM BlackBerry 7130v
RIM BlackBerry 7130e
RIM BlackBerry 8700c  (RIM Electron)
RIM BlackBerry 8700g / 8705g  (RIM Electron)
RIM BlackBerry 8700r  (RIM Electron)
RIM BlackBerry 8700f  (RIM Electron)
RIM BlackBerry 8703e
RIM BlackBerry 8707g
RIM BlackBerry 8707h
RIM BlackBerry 8707v
RIM BlackBerry Pearl 8100
RIM BlackBerry 8700v  (RIM Electron)
Remove all | Add this item to the comparisonAdd to compare | Add this item to the comparisonAdd to compare | Add this item to the comparisonAdd to compare | Add this item to the comparisonAdd to compare | Add this item to the comparisonAdd to compare | Add this item to the comparisonAdd to compare | Add this item to the comparisonAdd to compare | Add this item to the comparisonAdd to compare | Add this item to the comparisonAdd to compare | Add this item to the comparisonAdd to compare | Add this item to the comparisonAdd to compare | Add this item to the comparisonAdd to compare | Add this item to the comparisonAdd to compare | Add this item to the comparisonAdd to compare | Add this item to the comparisonAdd to compare

IntroductionIntroduction
ReleasedFirst official market release date in (year, month) 2006 Apr 11 2006 Jun 8 2006 Sep 2006 Aug 2 2005 Nov 21 2005 Nov 21 2006 Jan 17 2005 Nov 29 2006 Jan 2006 Sep 17 2006 Aug 2007 Jun 11 2006 May 29 2006 Sep 12 2006 Mar
Hardware DesignerThe company which designed this device RIM RIM RIM RIM RIM RIM RIM RIM RIM RIM RIM RIM RIM RIM RIM
ManufacturerThe company which produces this device RIM RIM RIM RIM RIM RIM RIM RIM RIM RIM RIM RIM RIM RIM RIM
Device CategorySmartphone, tablet, smart watch, PDA, palmtop, etc. Smartphone Smartphone Smartphone Smartphone Smartphone Smartphone Smartphone Smartphone Smartphone Smartphone Smartphone Smartphone Smartphone Smartphone Smartphone

Physical AttributesPhysical Attributes
WidthWidth is horizontally measured between the left and right edges of device according to the default display orientation 53 mm 55 mm 55 mm 56 mm 56 mm 69.5 mm 69.5 mm 69.5 mm 69.5 mm 69.5 mm 69.5 mm 69.5 mm 69.5 mm 50 mm 69.5 mm
HeightHeight is vertically measured between the bottom and top edges of device according to the default display orientation 119 mm 115 mm 114.5 mm 115 mm 117 mm 110 mm 110 mm 110 mm 110 mm 110 mm 110 mm 110 mm 110 mm 107 mm 110 mm
DepthDepth refers to the thickness of the device. Depth is usually the smallest dimension of the device 23 mm 19 mm 18.4 mm 18 mm 23 mm 19.5 mm 19.5 mm 19.5 mm 19.5 mm 19.5 mm 19.5 mm 19.5 mm 19.5 mm 14.5 mm 19.5 mm
Dimensions 2.09x4.69x0.91 inches 2.17x4.53x0.75 inches 2.17x4.51x0.72 inches 2.20x4.53x0.71 inches 2.20x4.61x0.91 inches 2.74x4.33x0.77 inches 2.74x4.33x0.77 inches 2.74x4.33x0.77 inches 2.74x4.33x0.77 inches 2.74x4.33x0.77 inches 2.74x4.33x0.77 inches 2.74x4.33x0.77 inches 2.74x4.33x0.77 inches 1.97x4.21x0.57 inches 2.74x4.33x0.77 inches
MassThe mass of the device including standard battery and stylus (if any and it can be inserted into the device) measured in grams 145 g 120 g 120 g 120 g 133 g 134 g 134 g 134 g 134 g 135 g 139.8 g 139.8 g 139.8 g 89.5 g 134 g
5.11 ounces 4.23 ounces 4.23 ounces 4.23 ounces 4.69 ounces 4.73 ounces 4.73 ounces 4.73 ounces 4.73 ounces 4.76 ounces 4.93 ounces 4.93 ounces 4.93 ounces 3.16 ounces 4.73 ounces

Software EnvironmentSoftware Environment
PlatformThe family of the operating system like Android, iOS, Windows Phone/Mobile, Palm OS, etc. BlackBerry OS BlackBerry OS BlackBerry OS BlackBerry OS BlackBerry OS BlackBerry OS BlackBerry OS BlackBerry OS BlackBerry OS BlackBerry OS BlackBerry OS BlackBerry OS BlackBerry OS BlackBerry OS BlackBerry OS
Operating SystemPre-installed (usually embedded) operating system which the device was released with. RIM BlackBerry OS 4.1 RIM BlackBerry OS 4.1 RIM BlackBerry OS 4.1 RIM BlackBerry OS 4.1 RIM BlackBerry OS 4.1 RIM BlackBerry OS 4.1 RIM BlackBerry OS 4.1 RIM BlackBerry OS 4.1 RIM BlackBerry OS 4.1 RIM BlackBerry OS 4.1 RIM BlackBerry OS 4.1 RIM BlackBerry OS 4.1 RIM BlackBerry OS 4.1 RIM BlackBerry OS 4.1 RIM BlackBerry OS 4.1
Japanese

Application processor, ChipsetApplication processor, Chipset
CPU ClockFrequency of the square signal which schedules the internal operation of microprocessor (synchronous sequential logic). The current consumed by the processor is approximately proportional to clock rate. 312 MHz 312 MHz 312 MHz 312 MHz 312 MHz 312 MHz 312 MHz 312 MHz 312 MHz 80 MHz 80 MHz 80 MHz 312 MHz 312 MHz
CPUManufacturer part number and most important characteristics of the IC which includes the main application processor or processors Intel XScale PXA272 (Bulverde), 2004, 32 bit, single-core, 32 Kbyte I-Cache, 32 Kbyte D-Cache Intel XScale PXA272 (Bulverde), 2004, 32 bit, single-core, 32 Kbyte I-Cache, 32 Kbyte D-Cache Intel XScale PXA272 (Bulverde), 2004, 32 bit, single-core, 32 Kbyte I-Cache, 32 Kbyte D-Cache Intel XScale PXA272 (Bulverde), 2004, 32 bit, single-core, 32 Kbyte I-Cache, 32 Kbyte D-Cache Intel XScale PXA272 (Bulverde), 2004, 32 bit, single-core, 32 Kbyte I-Cache, 32 Kbyte D-Cache Intel XScale PXA272 (Bulverde), 2004, 32 bit, single-core, 32 Kbyte I-Cache, 32 Kbyte D-Cache Intel XScale PXA272 (Bulverde), 2004, 32 bit, single-core, 32 Kbyte I-Cache, 32 Kbyte D-Cache Intel XScale PXA272 (Bulverde), 2004, 32 bit, single-core, 32 Kbyte I-Cache, 32 Kbyte D-Cache Intel XScale PXA272 (Bulverde), 2004, 32 bit, single-core, 32 Kbyte I-Cache, 32 Kbyte D-Cache Intel XScale PXA272 (Bulverde), 2004, 32 bit, single-core, 32 Kbyte I-Cache, 32 Kbyte D-Cache Intel XScale PXA272 (Bulverde), 2004, 32 bit, single-core, 32 Kbyte I-Cache, 32 Kbyte D-Cache

Operative MemoryOperative Memory
RAM TypeType of volatile memory IC which specifies RAM architecture, timing characteristics, refresh mode, voltage levels and physical design of the IC. Two major types of random-access memory is static RAM (SRAM) periodically refreshed dynamic RAM (DRAM). SRAM SDRAM SDRAM SDRAM SDRAM SDRAM SDRAM SDRAM SDRAM SDRAM SDRAM SDRAM SDRAM SDRAM SDRAM
RAM Capacity (converted)RAM capacity in binary bytes (KiB: 1024 bytes, MiB: 1024 KiB, GiB: 1024 MiB) 8 MiB RAM 16 MiB RAM 16 MiB RAM 16 MiB RAM 16 MiB RAM 16 MiB RAM 16 MiB RAM 16 MiB RAM 16 MiB RAM 16 MiB RAM 16 MiB RAM 16 MiB RAM 16 MiB RAM 32 MiB RAM 16 MiB RAM



Non-volatile MemoryNon-volatile Memory
Non-volatile Memory InterfaceInterface (e.g. UFS 2.0, eMMC 5.1, moviNAND) which determines physical layer (width, clock rate, lanes, protocol) of data transfer between the application processor and the NV memory Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Non-volatile Memory Capacity (converted)The value of ROM capacity converted to the most appropriate units (KiB: 1024 bytes, KB: 1000 bytes, MiB: 1024 KiB, MB: 1000 KB, GiB: 1024 MiB, GB: 1000 MB) 64 MiB ROM 64 MiB ROM 64 MiB ROM 64 MiB ROM 64 MiB ROM 64 MiB ROM 64 MiB ROM 64 MiB ROM 64 MiB ROM 64 MiB ROM 64 MiB ROM 64 MiB ROM 64 MiB ROM 64 MiB ROM 64 MiB ROM

DisplayDisplayAll parameters that related to display
Display DiagonalThe distance measured between the furthest corners of the display. In case of display with rounded edges this refers to the diagonal of the smallest bounding rectangle. 60 mm 58 mm 58 mm 58 mm 58 mm 66 mm 66 mm 66 mm 66 mm 66 mm 66 mm 66 mm 66 mm 55 mm 66 mm
2.4 inch 2.3 inch 2.3 inch 2.3 inch 2.3 inch 2.6 inch 2.6 inch 2.6 inch 2.6 inch 2.6 inch 2.6 inch 2.6 inch 2.6 inch 2.2 inch 2.6 inch
ResolutionHorizontal and vertical resolution of the primary display. In case of display with rounded edges this refers to the smallest bounding rectangle. 260x240 260x240 260x240 260x240 260x240 320x240 320x240 320x240 320x240 320x240 320x240 320x240 320x240 260x240 320x240
Horizontal Full Bezel WidthDefined as the sum of width of left and right vertical display bezels. If the display panel is located in the middle width of left and right bezels are the same and their width is the half of the full bezel width. 8.91 mm 12.38 mm 12.38 mm 13.38 mm 13.38 mm 16.7 mm 16.7 mm 16.7 mm 16.7 mm 16.7 mm 16.7 mm 16.7 mm 16.7 mm 9.59 mm 16.7 mm
Display Area UtilizationRegular display area per regular front panel area ratio. This approximated indicator does not count with possible rounded corners (neither on front panel nor on display) or display notches, holes. 28.4% 26.5% 26.6% 26.0% 25.6% 27.3% 27.3% 27.3% 27.3% 27.3% 27.3% 27.3% 27.3% 28.2% 27.3%
Pixel DensityIndicates the number of pixels per inch 150 PPI 155 PPI 155 PPI 155 PPI 155 PPI 154 PPI 154 PPI 154 PPI 154 PPI 154 PPI 154 PPI 154 PPI 154 PPI 163 PPI 154 PPI
Display TypeDisplay technology, e.g. Color/ monochrome e-ink, STN, PM-OLED, AM-OLED, TN-TFT, IPS TFT, ASV TFT, MVA TFT, PVA TFT, PLS TFT Color TN-TFT LCD display Color TN-TFT LCD display Color TN-TFT LCD display Color TN-TFT LCD display Color TN-TFT LCD display Color TN-TFT LCD display Color TN-TFT LCD display Color TN-TFT LCD display Color TN-TFT LCD display Color TN-TFT LCD display Color TN-TFT LCD display Color TN-TFT LCD display Color TN-TFT LCD display Color TN-TFT LCD display Color TN-TFT LCD display
Number of Display ScalesMaximal number of displayable colors or scales 65536 65536 65536 65536 65536 65536 65536 65536 65536 65536 65536 65536 65536 65536 65536

Graphical SubsystemGraphical Subsystem

Audio/Video InterfacesAudio/Video Interfaces

Audio SubsystemAudio Subsystem
Microphone(s)Analog or digital sound receiver. Main applications: voice calls, active noise cancellation, voice command, voice/video recording, voice identification mono mono mono mono mono mono mono mono mono mono mono mono mono mono mono
Loudspeaker(s) mono mono mono mono mono mono mono mono mono mono mono mono mono mono mono
Audio Output 2.5mm 2.5mm 2.5mm 2.5mm 2.5mm 2.5mm 2.5mm 2.5mm 2.5mm 2.5mm 2.5mm 2.5mm 2.5mm 3.5mm 2.5mm

Cellular PhoneCellular Phone
Supported Cellular BandsList of supported cellular networks with band names. For example GSM900 refers to the GSM system with the 890-915 MHz uplink and 935-960 downlink bands. iDEN800, iDEN900 bands GSM850, GSM900, GSM1800, GSM1900 bands GSM850, GSM900, GSM1800, GSM1900 bands GSM850, GSM900, GSM1800, GSM1900 bands CDMA800 (BC0), CDMA1900 (BC1/BC14) bands GSM850, GSM900, GSM1800, GSM1900 bands GSM850, GSM900, GSM1800, GSM1900 bands GSM850, GSM900, GSM1800, GSM1900 bands GSM850, GSM900, GSM1800, GSM1900 bands CDMA800 (BC0), CDMA1900 (BC1/BC14) bands GSM850, GSM900, GSM1800, GSM1900, UMTS2100 (B1) bands GSM850, GSM900, GSM1800, GSM1900, UMTS2100 (B1) bands GSM850, GSM900, GSM1800, GSM1900, UMTS2100 (B1) bands GSM850, GSM900, GSM1800, GSM1900 bands GSM850, GSM900, GSM1800, GSM1900 bands
Supported Cellular Data LinksList of supported cellular data links and rates. iDEN data links CSD, GPRS, GPRS C10, EDGE data links CSD, GPRS, GPRS C10, EDGE data links CSD, GPRS, GPRS C10, EDGE data links cdmaOne, CDMA2000 1x, CDMA2000 1xEV-DO data links CSD, GPRS, GPRS C10, EDGE data links CSD, GPRS, GPRS C10, EDGE data links CSD, GPRS, GPRS C10, EDGE data links CSD, GPRS, GPRS C10, EDGE data links cdmaOne, CDMA2000 1x, CDMA2000 1xEV-DO data links CSD, GPRS, GPRS C10, UMTS data links CSD, GPRS, GPRS C10, UMTS data links CSD, GPRS, GPRS C10, EDGE, UMTS data links GPRS, GPRS C10, EDGE data links CSD, GPRS, GPRS C10, EDGE data links
SIM Card SlotSupported Subscriber Identification Card (SIM) Format like mini-SIM, micro-SIM, nano-SIM, embedded SIM, etc. No Mini-SIM (2FF) Mini-SIM (2FF) Mini-SIM (2FF) No Mini-SIM (2FF) Mini-SIM (2FF) Mini-SIM (2FF) Mini-SIM (2FF) No Mini-SIM (2FF) Mini-SIM (2FF) Mini-SIM (2FF) Mini-SIM (2FF) Mini-SIM (2FF)
Complementary Phone ServicesPossible extras: voice transmission, voice speaker, vibration, speakerphone, active noise cancellation, PTT, HD Voice, VoLTE, etc. Voice transmission, Vibrate, Speakerphone, Push-to-Talk Voice transmission, Vibrate, Speakerphone Voice transmission, Vibrate, Speakerphone Voice transmission, Vibrate, Speakerphone Voice transmission, Vibrate, Speakerphone Voice transmission, Vibrate, Speakerphone Voice transmission, Vibrate, Speakerphone Voice transmission, Vibrate, Speakerphone Voice transmission, Vibrate, Speakerphone Voice transmission, Vibrate, Speakerphone Voice transmission, Vibrate, Speakerphone Voice transmission, Vibrate, Speakerphone Voice transmission, Vibrate, Speakerphone Voice transmission, Vibrate, Speakerphone Voice transmission, Vibrate, Speakerphone
SAR (head)Measured SAR value at head configuration 1.090 W/kg 1.090 W/kg 1.360 W/kg 0.760 W/kg
SAR (body)Measured SAR value at body configuration 0.680 W/kg 0.680 W/kg 1.230 W/kg 0.830 W/kg 0.830 W/kg 0.830 W/kg 0.830 W/kg 1.220 W/kg

Secondary Cellular PhoneSecondary Cellular Phone

Control PeripheralsControl Peripherals
KeyboardConventional input peripheral which allows the user to enter characters by pressing a dedicated key Built-in combined numeric/dense QWERTY Built-in combined numeric/dense QWERTY Built-in combined numeric/dense QWERTY Built-in combined numeric/dense QWERTY Built-in combined numeric/dense QWERTY Built-in QWERTY Built-in QWERTY Built-in QWERTY Built-in QWERTY Built-in QWERTY Built-in QWERTY Built-in QWERTY Built-in QWERTY Built-in combined numeric/dense QWERTY Built-in numeric
Number of keys 23 23 23 23 23 38 38 38 38 38 38 38 38 24 38
Scroll WheelScroll Wheel, jog and rotary machanisms to help user with scrolling on the screen 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel 3-way rotary scroll wheel Trackball 3-way rotary scroll wheel

Communication InterfacesCommunication Interfaces
Expansion InterfacesNon-volatile memory and/or I/O expansion interfaces. For example: microSD, microSDXC, SDHC, CF II., PCMCIA III., etc. No No No No No No No No No No No No No TransFlash, microSD No
USBFirst or the only USB port. USB is a common high-speed serial bus standard that allows data and power transfer between the mobile device and another computer. Version of USB identifies USB standard. USB 1.1 USB 1.1 USB 1.1 USB 1.1 USB 1.1 USB 1.1 USB 1.1 USB 1.1 USB 1.1 USB 1.1 USB 1.1 USB 1.1 USB 1.1 USB 1.1 USB 1.1
USB FS (12 Mbps) USB FS (12 Mbps) USB FS (12 Mbps) USB FS (12 Mbps) USB FS (12 Mbps) USB FS (12 Mbps) USB FS (12 Mbps) USB FS (12 Mbps) USB FS (12 Mbps) USB FS (12 Mbps) USB FS (12 Mbps) USB FS (12 Mbps) USB FS (12 Mbps) USB FS (12 Mbps) USB FS (12 Mbps)
USB Services No No No No No No No No No No No USB charging No No No
USB Connector USB Mini-B (mini-USB) USB Mini-B (mini-USB) USB Mini-B (mini-USB) USB Mini-B (mini-USB) USB Mini-B (mini-USB) USB Mini-B (mini-USB) USB Mini-B (mini-USB) USB Mini-B (mini-USB) USB Mini-B (mini-USB) USB Mini-B (mini-USB) USB Mini-B (mini-USB) USB Mini-B (mini-USB) USB Mini-B (mini-USB) USB Mini-B (mini-USB) USB Mini-B (mini-USB)
BluetoothIEEE 802.15 is a short-range radio technology standard that allows transfer of data, and the use of accessories such as wireless audio devices and printers. This field specifies the supported BT version. Bluetooth 1.1 Bluetooth 2.0 Bluetooth 2.0 Bluetooth 2.0 Bluetooth 2.0 Bluetooth 2.0 Bluetooth 2.0 Bluetooth 2.0 Bluetooth 2.0 Bluetooth 2.0 Bluetooth 2.0 Bluetooth 2.0 Bluetooth 2.0 Bluetooth 2.0 Bluetooth 2.0

Multimedia BroadcastMultimedia Broadcast

Satellite NavigationSatellite Navigation
Complementary Satellite ServicesPossible extras: S-GPS, A-GPS, Geotagging, TMC, QuickGPS, QZSS, etc. No No No No A-GPS No No No No A-GPS No No No No No

Primary Camera SystemPrimary Camera SystemPrimary camera usually has better imaging capabilities than secondary camera if any
Camera PlacementRefers to the placement of the primary camera on the device. Front, rear or rotatable. Generally rear. No No No No No No No No No No No No No Rear No
Camera Image SensorRefers to the semiconductor technology of image sensor (FSI CMOS, BSI CMOS, etc.) No No No No No No No No No No No No No CMOS No
Number of effective pixelsA measurement of the maximum pixel number at which the camera can take a picture, often referred to as Megapixels (when horizontal and vertical measurements are multiplied) 1.3 MP camera
ZoomA feature that changes the focal length of the lens of a camera. Optical zoom requires the lens to move in and out, providing high-quality close ups from a distance 1.0 x optical zoom
FlashA flash is used to brighten dark areas when taking photographs; is also used as a flashlight. This field contains the exact type of the flash. No No No No No No No No No No No No No single LED No

Secondary Camera SystemSecondary Camera SystemWidely used for video telephony or taking selfies

Built-in SensorsBuilt-in Sensors

Ingress ProtectionIngress Protection
Protection from solid materialsIngress Protection Standards. IP First digit: Protection from solid objects or materials Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Protection from liquidsIngress Protection Standards. IP Second digit: Protection from liquids Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes

Power SupplyPower Supply
BatteryBattery technology Li-ion Li-ion Li-ion Li-ion Li-ion Li-ion Li-ion Li-ion Li-ion Li-ion Li-ion Li-ion Li-ion Li-ion Li-ion
removable removable removable removable removable removable removable removable removable removable removable removable removable removable removable
1-cell 1-cell 1-cell 1-cell 1-cell 1-cell 1-cell 1-cell 1-cell 1-cell 1-cell 1-cell 1-cell 1-cell 1-cell
Nominal Battery CapacityIf there are more than 1 cells in the battery in parellel connection the nominal resulting battery capacity is the sum of capacity of cells 1100 mAh battery 1100 mAh battery 1100 mAh battery 1000 mAh battery 1100 mAh battery 1100 mAh battery 1100 mAh battery 1100 mAh battery 1100 mAh battery 900 mAh battery 1100 mAh battery

Geographical AttributesGeographical Attributes
Market CountriesCountries where the device was officially sold. Overlap is possible. No No No No No No No No No No No Japan No No No
Market RegionsRegions where the device was officially sold.  Overlap is possible. No No North America No No No No No No No No Asia Europe, Western Europe No No
Mobile OperatorList of mobile operators (carriers) or distributors which sold the device in their own network NTT DoCoMo

Datasheet AttributesDatasheet Attributes
Data IntegrityData integrity level determines the integrity of the published information. Final datasheets are not intended to be modified in the future, preliminary ones can be based on unofficial information or speculations, incomplete ones are also preliminary b Incomplete Final Final Final Final Final Final Final Final Final Final Final Final Final Final
AddedThe exact time of the datasheet addition 2008-09-17 21:22 2008-09-19 23:08 2008-09-19 23:27 2008-09-20 18:22 2008-09-20 18:36 2008-09-25 23:10 2008-09-25 23:24 2008-09-25 23:39 2008-09-26 00:02 2008-09-26 16:15 2008-09-26 16:27 2008-09-26 16:38 2008-09-26 16:40 2008-09-27 21:32 2011-03-03 17:00

You are here: Device Specs \ Compare