Sir mera network automatically gayab ho jarha hai plz solve this issue ???

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Sir we all were facing to much issue in Samsung f62 while using internet network is too slow by using any sim .  so please provide carrier aggregate support for better internet and calling  in Samsung f62 

Guys ap sab bhi pareshan hai kya internet issue se F62 phone se after last july update

Sir we are facing to much issues after installing july software update in my phone the internet speed is to slow so after that i have done all type of settings from customer care but still my internet is slow so please provide me new software updates...