Good day Engineers in the house. Nice job you're
doing. keep it up.
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My problem:
I use a Gionee P2S phone with two sims (airtel/
etisalat). I prefer using airtel connection for data.
But I observe that I can only browse sites, I can't
download, can't update my apps, mails don't
drop, some apps don't work etc. But if I switch to
the etisalat for data everything starts working.
.

So I called airtel's Customer Service , was told there is no restrictions from their end, that probably its the phone. To confirm, I remove the airtel sim and put in a friend's Android phone (Infinix hot note) and it was working perfectly, I am at a dilemma.
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Please, help. what do I do?
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Your assistance will be highly appreciated.