The Nokia Lumia 635 was released in 2014 at the same time as the Lumia 930. Its a bit odd that they released to very high-end phones so close to each other in 2014 which is not normal for Nokia. They usually released a mid-range (which I would think this was marketed as), low end and high-end phone but never two high-end phones at the same time.
The Nokia Lumia 635 was in terms of hardware just a cut under the Lumia 930 model. The Lumia 635 came with the usual connectivity you would expect from a mid-range phone as listed below. The phone is light and about the same as most Nokia phones in this range coming in at 134 g (4.73 oz). The phone uses a IPS LCD capacitive touchscreen with 16M colors. The screen resolution is also good at 480 x 854 pixels (~221 ppi pixel density) which is twice as high as a normal cheap mobile phone. The multi touch screen is also covered with Corning Gorilla Glass 3 for scratch protection.
Since Microsoft took over Nokia all their phones come out with the Microsoft Windows Phone 8.1 operating system. The Nokia Lumia 635 is powered by a Qualcomm Snapdragon 400 and a Quad-core 1.2 GHz Cortex-A7 processor. The Adreno 305 GPU also comes as standard. All in all a very powerful phone with lots to offer.
The phone also has a microSD cardslot with up to 128 GB of storage ability. The internal storage space and memory is 8 GB with 512 MB/ 1 GB RAM. This phone only has one camera and that is a 5 MP, 2592 х 1944 pixels camera with autofocus. Video on the phone is also very good at 720p@30fps. If you are looking for a more multimedia phone then consider the Nokia Lumia 930 as a option.
|2G: GSM 850 / 900 / 1800 / 1900|
|3G: HSDPA 850 / 900 / 2100 – RM-974|
|3G: HSDPA 850 / 1700 / 1900 / 2100 – RM-975|
|4G: LTE band 3(1800), 7(2600), 20(800) – RM-974|
|4G: LTE band 2(1900), 4(1700/2100), 5(850), 7(2600), 17(700) – RM-975|
|Speed: HSPA 42.2/5.76 Mbps, LTE Cat3 100/50 Mbps|
Connectivity on the phone is the Wi-Fi 802.11 b/g/n with DLNA as well as hotspot. It also has Bluetooth v4.0, A2DP, LE/ apt-X after WP8 Denim update as well as A-GPS and GLONASS, an FM radio and USB microUSB v2.0. The phone also comes with an accelerometer.
With a Li-Ion 1830 mAh battery and 600+ hours of standby time and a talk-time of about 12 hours the phone makes for a good buy in its price range of about €100. This phone get mixed reviews but you get what you pay for. If you are looking for a phone that starts apps faster then you need to look at a different Lumia phone on offer.