Legal ways to improve mobile signal at home.
By SignalFix · Facts checked 2026-10-02
Most weak-signal problems at home have a cause you can find and a fix that doesn't break any rules. Here's the order we'd try them in, cheapest first.
1. Measure every room
Bars on the screen are a rough guide. Your phone can show the real number in dBm. Walk every room and note it, for each SIM. You'll often find the problem is two rooms, not the whole house. How to read signal in dBm.
2. Check your phone and SIM
- Update the phone's software. Network settings ship with updates.
- Make sure 4G/5G (VoLTE) is enabled for the SIM you call on.
- Try the SIM in another phone. If it's fine there, the phone is the problem.
- Old or damaged SIMs can cause trouble. Your operator can replace it.
3. Turn on Wi-Fi calling
If you have broadband, Wi-Fi calling carries your normal calls over Wi-Fi. Airtel and Jio say it works on any Wi-Fi network at no extra charge, on supported phones. It's often the single biggest improvement for a flat with good broadband. Set it up.
4. Get Wi-Fi into every room
Wi-Fi calling is only as good as the Wi-Fi in the room you're standing in. If the router is in the hall and the bedroom is two walls away, a better-placed router or a mesh system usually helps more than anything else.
5. Complain to your operator, with evidence
Operators run the network and can re-tune or add capacity. A complaint that says "−112 dBm in two bedrooms on Airtel, −78 on the balcony" is harder to close without action than "signal is bad". Ask for a docket number, and use the appellate route if it isn't resolved. Airtel's Open Network portal also lets you report network issues. The complaint path.
6. Try another network
Different operators use different towers and bands. If one network reaches your rooms and another doesn't, porting (MNP) is a legitimate fix. Measure both SIMs before you switch.
7. Fix the building properly
When a whole tower, basement or office floor is affected, the fix is at building level: in-building coverage deployed by the operators or by licensed infrastructure providers. RWAs and offices can request it, and readings help make the case. SignalFix's SignalCheck produces exactly that evidence, and our install is delivered through a lawful route agreed in writing.
What to avoid
- Unlicensed boosters and repeaters. DoT says only licensed operators may use them. Why.
- "Signal booster" apps and stickers. An app can't change the radio signal reaching your phone.
- Anyone guaranteeing "100% signal". Nobody can promise what a network will do. Ask for readings instead.