Anyone know why I cannot get data or service? I just have the little R above the signal bars. I have tried rebooting, redownloading and flashing, I have tried toggling back and forth from gsm to CDMA/LTE. When i just toggle to CDMA it tries to connect and does sometimes but as soon as it does it goes right back to the little R. I have tried *#*#4636#*#* as well and still cannot get data or service. Please someone help
What worked for me was upping the CPU min clock to 600 MHz and change the governor to hotplug. Check "set on boot" and reboot. Good luck.