Help happens alot: phone loses internet connection while 3g connection has no problems

[Unstoppable0]

How you doin, guys?
My Desire 816 used to lose internet connection suddenly while browsing web or using apps although everything seems right:
Network signal is strong. The "h" symbol exists normally in the status bar. But with incoming arrow deactivated.

This problem disappears when I restart the device.
Solutions like : disabling mobile data then enabling it Or switching to airplane mode then disabling it donot work.

When I switch network to gsm only mode, the internet come back . But with 2g slow connection. When I switch to gsm/cdma or cdma only I lose internet again .

I hope that you can help!
Thanks in advance

 

[cam94z28]

I am on virgin mobile (sprint). this is the first phone I've had that has been REALLY flakey with signal levels. I am relatively far from my nearest tower, but I have always had 3-4 bars with past phones. with this phone, i nearly always have 1 bar under 4g Lte, yet I get 6-30 Mbps on speed tests (with 1 bar). if I drop to 3g while in a bad service area, I am always showing 4-5 bars. fwiw I have never dropped a connection.

if you are showing more than 1 bar and still dropping connection, I would suspect either a problem with your tower, internal radio problem with the phone, or a data plan configuration error (in phone or at provider).