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Repair LG Optimus L3 E400 Weak Or Low Network Problem

Lg E400 Network Problem Ways Jumper Solution

The signal problem in mobile phones can occur because of many other reasons like if the mobile phone is water damaged it can get rusty which in turn can damage any number of mobile phone parts. Any way if the antenna points are damaged I have marked their full jumper ways in the diagram below.

Problems
No network in your phone.
Low signals.
Phone only searching for network but not connecting.
Constantly dropping signals.
Call dropping issue.

Reasons of Problems
Your SIM card might be faulty.
Your Network Carrier might be having any temporary difficulties.
GSM antenna contact might be rusted or might have encountered some kind of dust.
Antenna contact pins are not properly in contact with your GSM antenna contacts.
Any of the coils and capacitors of Network Antenna or Power Amp IC might be faulty.
Secondary antenna’s coil might be faulty.

Hardware Solution

lg e400 network problem ways jumper solution


The very first thing that you need to do is to clean GSM antenna contacts and check, as most of the time dust or rust becomes the cause of low or no network.

Now pull up GSM antenna contacts pins and check, as most of them time network problem arises due to the fact that GSM antenna pins and contacts are not in contact properly.
Check all the components of antenna contact pins.

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