Ask if the mobile phone antenna is broken

Here are the questions I have for others I hope it will be helpful to you.

Q Recently, the E63 fell a little, and then the signal is often very unstable, is the built-in antenna broken? Where can I change it?

This phone I've disassembled several times.

In fact, the phone does not have a built-in antenna.

It's a signaling device that's plastic, wrapped in a green skin, and has a grid of regular copper sheets inside, and it's generally not broken, it's very strong, and it's not what you say.

If it is really obviously unstable, then it may be that the signal device is in contact with the elastic copper sheet of the mobile phone motherboard, and it is okay to go to the mobile phone store to take a look.

It's just that you go to customer service, and he will give you a physical examination of your mobile phone, and he will tell you that there is no problem with your mobile phone, and if you don't believe it, you can try it.

Most likely, it's something to do with your mental effect or a local signal.

In fact, the phone is very sturdy, my 71 fell into the water twice, the first time, the microphone was broken, and it took 180 grass! The second time, I fell into the rain for 10 minutes, I didn't go to repair it, and then I bought a set of disassembly tools and dried it with a hair dryer myself, no problem at all, and I also changed to a white shell a few days ago, the same as a new mobile phone

Follow-up Now there is no problem with the mobile phone Follow-up but the original at home The signal is full, and now the last QQ is always disconnected 、、、

It shouldn't be that the hardware is broken, if you really want to check it, go to customer service to check the signal device on the side of the microphone.

Follow-up asked went to customer service today, said there was no problem, but still gave me a motherboard, and the signal was really good when I got home, so I chose you, thank you

Asked by TA: helloiiiii from team SIS Smartphone |Fourth-level rate: 26%.

In this case, it must be the problem that it shouldn't cost much to see how much. Maybe it's just that the contact is not good, and you don't have to change things.

Ways to tell if your phone's antenna is broken:

1. If the signal of the mobile phone suddenly deteriorates, and it will affect the call and Internet access, it may be that the antenna of the mobile phone is broken.

2. If the power consumption of the mobile phone suddenly increases, the standby time of the mobile phone will be affected, and the mobile phone will heat up.

When this happens, the reason is that the mobile phone antenna is bad, and the damage of the antenna causes the signal to deteriorate, so that the transmission power of the mobile phone increases, and the power consumption is abnormal.

The built-in antenna of the mobile phone is easy to be damaged when the mobile phone is dropped, which will lead to the poor signal of the mobile phone after damage, and the problem of unsatisfactory mobile phone signal or no signal of the mobile phone often occurs. If your phone's antenna is broken, the safest way is to send your phone to an after-sales service for repair. You can also open the case of the mobile phone, find the solder joint connected to the antenna on the motherboard, return to the relatives and then solder the copper wire to the antenna, and the other end to the solder joint of the motherboard antenna, and then use all-purpose glue to glue the antenna to the chassis, you can solve the problem.

But this workaround is not easy to operate, and when welding, if the welding is not done properly, it may lead to other problems with the phone, so it is best not to do it yourself.

1. The following conditions will occur if the antenna is broken:

1. The mobile phone signal will deteriorate, which will affect calls and Internet access.

2. Another hidden problem is that a bad signal will lead to an increase in the transmitting power of the mobile phone, increase the power consumption of the mobile phone, affect the standby time, and the mobile phone will heat up.

Second, the specific analysis of the fault point:

1. The signal is sometimes absent, sometimes full, and sometimes not at all. The signal is not strong, often in 1-3 squares.

Fault point: The antenna, intermediate frequency, and 13MHz crystal are caused by virtual soldering.

2. The standby signal is normal, and the signal will become weaker as soon as it hits the **.

Point of failure: The amplifier is partially damaged and needs to be replaced.

3. There is no signal at all, and no service is displayed.

Fault point: Antenna, power amplifier, 13MHz crystal or IF are broken and need to be replaced.

If the antenna is broken, the mobile phone signal will become poor, which will affect calls and Internet access, and another hidden problem is that the signal is not good, which will lead to an increase in the transmitting power of the mobile phone, increase the power consumption of the mobile phone, affect the standby time, and the mobile phone will heat up.