My smartphone struggles to connect to the internet inside buildings. What could be the cause?

[Kross]

My android smartphone is running a 4G network but struggles greatly to connect to the internet inside buildings. It connects very fast when steeped out of buildings and enclosed spaces.

What could be the cause of the slow internet connection in buildings?

 

[King Belieal]

The antenna of the phone is not properly fixed. You might need to open the back of the phone to fix that well.

 

[neku]

Do you face this problem in all buildings and do the buildings have an HVAC system installed? The internet data signal may be getting blocked due to HVAC system.

 

[eLdavis]

I can't remember the name but it's possible the connection wire or antenna might be faulty, have you met an expert to check it out?

 

[King Belieal]

It is obviously the antenna that is the cause of the problem. Some repairers when fixing minor issues like charging port don't fix back the antenna properly and it causes that.

I can't remember the name but it's possible the connection wire or antenna might be faulty, have you met an expert to check it out?