I bought a Nexus 5 from the US and am using it in India on a vodafone carrier. 2g calls work fine.
3g data does not. When i turn data on, it turns to H - > 3g -> and no signal and the cycle continues. I have tried replacing the sim twice to no avail. Is this a modem problem ? Should I flash to a different one ?
The US version has different radio bands than the international version. That could be why you are having issues.
North America (D820) model:
GSM: 850/900/1800/1900 MHz
CDMA: Band Class: 0/1/10
WCDMA: Bands: 1/2/4/5/6/8/19
LTE: Bands: 1/2/4/5/17/19/25/26/41
Rest of World (D821) model:
GSM: 850/900/1800/1900 MHz
WCDMA: Bands: 1/2/4/5/6/8
LTE: Bands: 1/3/5/7/8/20
My nexus kept changing between H and 3g and I couldn't figure out why. Eventually the reason behind it was my preferred network type got changed to 3g instead of LTE. So I would check that first.
Sent from my Nexus 5 using xda premium
That switching is intended. The phone idles on UMTS and when data is called it switches to HSPA as indicated by the icons. It's not supported in all T-Mobile markets, but it is on mine and presumably yours.
