I just bought A13 and regretting now. My phone gets connected to wifi well but as soon as I lock my phone and don't use it let's say for 20 min and in mean time if some one is doing a whats app call or any other app call it will not notify me about it. Some how phone thinks wifi is disconnected.
I have check all setting , reset network setting, checked phone is not on do not disturb , all permission are intact. Reset my router as well restarted phone also. No apps in sleeping list. I have tried 5g band as well as 2.4 band also but no luck. As long as I am using phone wifi if working and when I lock phone it stops.
Go to setting, then connections, then go to WI-FI. Then tap the gear icon near the connection you having problem with, then tap view more, in metered network select treat as unmetered. Then restart the device. I hope this will solve your issue.
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