When HTC first released the One M8 in India, it decided to disable the phone's 4G LTE radio. So despite having a Snapdragon 801 SoC and all the necessary hardware in place, Indian users couldn't connect their phones to LTE networks and enjoy higher internet speeds. The company has been promising to release an OTA update to fix the issue on August 15th and they've fulfilled their commitment.
The OTA update has started rolling out to the M8 in India, pushing the device to version 2.10.720.1.
HTC Updates The One M8 In India To Android 4.4.3 With Promised LTE Support In Tow was written by the awesome team at Android Police.