A bump to Android 4.1.2 Jelly Bean has started hitting T-Mobile's Samsung Galaxy S Relay 4G (SGH-T699). The Android 4.1.2 Jelly Bean upgrade comes with a new software build T699UVBMC5, and can be downloaded via OTA update or using Samsung Kies software update tool. According to T-Mo it's update the device to Jelly Bean OS but there is no exact changelog for users to expect on this update. In fact, I don't know much about this Galaxy S Relay, so I have added some specs here to know more about this device. It's just surprising that it's got the 4.1.2 bump in a short period of time, I guess.
Samsung Galaxy S Relay 4G (T-Mobile)CPU: 32-bit 1.5GHz dual-core Qualcomm Snapdragon S4 (ARM V7 Architecture)
GPU: Qualcomm Adreno 225
RAM: 1 Gigabyte DDR2
Flash: 8 Gigabytes, ~5GB available to user under stock ROM
MicroSD slot for expansion
Display: 4" Samsung SuperAMOLED screen @ 800x480 with Multi-Touch Capacitive Touchscreen. 16,777,216 colours
Keyboard: 5 row 52-key QWERTY keyboard with inverted-T arrow keys
Rear Camera: 5 Megapixel with LED flash
Front Camera: 1.3 Megapixel
Size: 4.96" x 2.56" x 0.53"
Weight: 5.6 Ounces
Power: 1800mAH Lithium-Polymer rechargeable battery model EB-L1K6ILA with NFC antenna integrated.
So, if you owned the Galaxy S Relay better check it out now. Just make sure you device battery has appropriate charged before performing the update. Again, there are two options to get this update via OTA and or using Samsung Kies. Just head over to T-Mobile support page for instructions to update your phone - http://support.t-mobile.com/docs/DOC-4712