The Nokia E72 and E75 smartphones have many features in common, but being sold by U.S. carriers isn't one of them. That doesn't mean they won't work in the U.S., though. In fact, because they can be unlocked, both will operate on U.S. carriers if you install the selected carrier's SIM card and purchase an unlock code from the manufacturer. While the E72 was produced specifically for T-Mobile, the E75 is not sold by U.S. carriers and must be unlocked before it can be used with one. Aside from their inter-carrier capabilities, there are no differences between the normal and unlocked versions of these phones, but there are several key differences between the phones themselves.
Physical Features
The Nokia E72 is 4.5 inches long, 2.3 inches wide and 0.4 inches deep, while the E75 measures 4.4 inches long, 2 inches wide and 0.6 inches deep. At 4.9 oz., the E75 is slightly heavier than the E72, which weighs 4.5 oz. Both phones feature a 2.4-inch thin-film transistor screen that displays more than 16 million colors at 240 by 320 pixels of resolution. The E72 is a candy-bar-style phone, meaning it has no slide out or flip components, and features its QWERTY keyboard directly beneath its display screen. The E75, on the other hand, contains its QWERTY keyboard on its slide-out portion and comes with a numeric keypad that is situated below its display screen.
Cameras
The E72 features a built-in 5 megapixel camera that takes still pictures at up to 2,592 by 1,944 pixels of resolution and is capable of recording video at 640 by 480 pixels. The E75's 3.2-megapixel camera captures still images at up to 2,048 by 1,536 pixels and is also able to record video at the same resolution as the E72. Both phones come with secondary front-facing cameras that give the devices videoconferencing capability.
Battery Life
The Nokia E72 is powered by a standard lithium-polymer battery that provides the phone with up to 12.5 hours of talk time and up to 576 hours, or 24 days, of standby time. A standard lithium-ion battery gives the Nokia E75 up to 5.3 hours of talk time and up to 280 hours, or 11.7 days, of standby time. The E72's times rank above the seven-hour average for talk time and the 434-hour average for standby time received by similar devices on the market at the time of publication. The E75's times rank below average.
Internal Features
Built on the Symbian 9.3 Series 60 v3.2 operating system, the Nokia E72 operates using a 600 MHz ARM 11 processor. The Nokia E75, in comparison, is built on the Symbian S60 rel. 3.2 operating system and uses a 369 MHz ARM 11 processor. Both devices connect to the 2G and 3G wireless networks using GSM and HSDPA technology and are Wi-Fi compatible. The E72 is equipped with 250MB of internal memory, while the E75 comes with 80MB. Both devices feature a built-in microSD card slot that supports microSD and microSDHC memory cards for up to 16GB of expanded memory.
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