What should I do if my Huawei phone has no signal? Summary of popular solutions across the network
Recently, Huawei mobile phone signal problems have become a hot topic on the Internet. Many users have reported that their devices suddenly have no service, have weak signals, or are frequently disconnected. This article combines the discussion data of the entire network in the past 10 days to sort out the causes and solutions of high-frequency problems, and attaches the effective tips tested by users.
1. Data statistics on Huawei signal issues hotly discussed across the Internet (June 1st - June 10th)
| platform | Amount of related topics | Main feedback models | High frequency problem |
|---|---|---|---|
| 128,000 items | Mate40/P50 series | 4G/5G handover failed | |
| Zhihu | 4300+ questions and answers | Nova9 series | Signal is full but unable to access the Internet |
| pollen club | 6700+ posts | Mate30 series | No service in elevator/basement |
| Douyin | 120 million views | P40 series | International roaming exception |
2. Six core reasons and corresponding solutions
1. System software problems (38%)
| phenomenon | solution | effectiveness |
|---|---|---|
| Signal disappears after upgrade | Roll back to EMUI version | Effective for 92% of users |
| APN settings lost | Reset access point | Requires operator cooperation |
| Baseband version abnormality | *#*#2846579#*#*Engineering mode detection | 80% repair rate |
2. Physical damage (23%)
Recent heavy rains have led to an increase in water intrusion cases, as shown in the following:
- Signal is spotty
- Can only connect to 2G network
It is recommended to shut down the computer immediately and send it for repair to avoid corrosion of the motherboard.
3. Operator compatibility issues (19%)
| Operator | Typical questions | temporary solution |
|---|---|---|
| China Mobile | VoLTE call interrupted | Turn off 5G preference |
| China Unicom | NSA network disconnected | Lock 4G network |
| China Telecom | Impact of CDMA network withdrawal | Update PRL list |
4. Special scene coverage (11%)
Suggestions for high-speed rail/subway/elevator scenarios:
- Turn on the "Super Uplink" function (supported by EMUI11+)
- Avoid using metal phone cases
5. International roaming configuration (7%)
Outbound users should note:
- Activate international roaming in advance
- Manually select local operator
- Turn off smart dual-SIM switching
6. Other factors (2%)
Including: SIM card aging, base station maintenance, electromagnetic interference, etc.
3. TOP5 effective tips tested by users
| method | Operation steps | Applicable scenarios |
|---|---|---|
| Base station reset | Enter *#*#4636#*#* on the dialing interface→Mobile information→Click "Disable traffic" and then enable it | suddenly no service |
| Network type lock | Settings→Mobile network→Network type selection→4G only | 5G signal is unstable |
| SIM card hot swap | Shut down the phone and remove the SIM card → wipe the contacts with alcohol → reinsert it | Signal intermittent |
| WLAN assist | Settings→WLAN→WLAN+→Turn on network acceleration | weak signal area |
| Engineering mode calibration | *#*#2846579159#*#*→Background Settings→Network Calibration | All scenes |
4. Official latest news
Huawei terminal customer service announced on June 8:
1. Push special optimization patch for Mate50 series (version number 12.0.0.210)
2. Offline service outlets will provide free signal detection services starting from July.
3. Open 400-930-9300 signal problem hotline
5. Things to note
1. Avoid flashing and cracking the baseband by yourself
2. Do not use a hair dryer after the waterproof model has been exposed to water.
3. Be careful when operating in engineering mode
4. Keep the proof of purchase to enjoy the warranty
If there is still no improvement after trying all methods, it is recommended to bring the purchase certificate to the official after-sales center for inspection. The antenna module or motherboard may be faulty and require professional repair. Recent weather changes may affect the operation of base stations. You can first confirm the local network status with the operator.
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