1
vote
1answer
918 views

Do external booster antennas help with 4G reception?

I have a Sprint HTC-EVO 4G. Today it's snowing, I'm in a downtown high-rise, and I'm only getting 3G. Would a booster antenna help (either now, or in general)?
2
votes
0answers
77 views

Does 4G work with new ROM on 4G phone? [closed]

In general, how can I know whether my 4G phone with a non-stock ROM still has 4G functionality? I've read in various forums and how-tos that rooting and flashing a new ROM on your 4G Android device ...
0
votes
2answers
257 views

Restoring HTC EVO 4G to stock

I bought an HTC Evo off someone and they had it rooted, but for some reason 4G isn't working. I'm not sure if it's because they rooted the phone and it now has wifi tether (idk to much about rooting ...
3
votes
2answers
225 views

What are the *technical* reasons preventing connection to 4G? How can I diagnose myself?

I have an EVO Shift, and often see an icon similar to 4G! (see enclosed picture with red arrow) in my android status bar. I have consulted with my carrier ad-nauseum, read the manual, rebooted, ...