Why cant access 3G internet.

[Android Central Question]

In the rural area am living there are some phones can't access 3G internet while others can, but when I take them to urban area the 3G is accessible to the phones which can't access in rural, I have tried all my level best to set them but I have failed.
Any help please.

 

[belodion]

Phones from one manufacturer may receive signal better than those from others. If you have no adequate signal from any carrier, it may be possible to use a signal booster. https://forums.androidcentral.com/showthread.php?t=409154

 

[me just saying]

check with your carrier about this. sometimes they will provide free boosters