Weak Mobile Network in a Rented Flat? A Tenant's Guide to Fixing It

If calls keep dropping inside your rented flat, the cause is usually the building, not your phone. As a tenant you cannot rebuild walls or change the floor you live on. You can still test the problem for free, try the no-cost fixes, and if you need a signal booster, choose one that your landlord will accept and that you can take with you when you move.

Why do some rented flats get such poor mobile network?

Tenants often discover the problem only after moving in. The flat looked fine during the visit, but now calls drop in the bedroom and mobile data crawls in the living room. The common reasons are:

• Building materials: thick RCC walls, metal grills and modern coated glass all weaken mobile signal before it reaches you.
• Direction of the flat: a flat whose windows face away from the nearest tower can get much weaker signal than the flat opposite it.
• Floor level: ground floors, stilt-facing flats and basement-adjacent units often sit in the shadow of nearby buildings.
• Dense neighbourhoods: in crowded areas of Bangalore, Pune, Delhi or Mumbai, a new tower built next door can block a signal path that used to work.

None of these is your fault, and in most cases none of them is your landlord's fault either. What matters is whether usable signal exists somewhere near the flat, such as on the balcony, at a window or on the terrace. That one fact decides which fix will work.

What can a tenant fix for free before spending anything?

Work through these steps first. They cost nothing and need nobody's permission.

1. Map the signal. Walk through every room, then the balcony and the terrace if you can reach it. Note the bars and, better still, the actual signal reading. The Signal Strength Checker explains how to read these numbers.
2. Check phone settings. Make sure VoLTE is on and the preferred network is set to 4G/5G, not 2G or 3G only.
3. Turn on Wi-Fi calling if the flat has broadband. Calls then travel over your internet connection instead of the mobile network.
4. Watch the timing. If data is fine in the morning but poor every evening, the problem may be congestion at the tower rather than weak signal. A booster does not fix congestion.
5. Compare SIMs. Ask a flatmate or neighbour on a different operator how their phone behaves in the same rooms.

If calls are now reliable, you may not need anything else. If the signal is weak only indoors but decent on the balcony or roof, a booster is the right tool.

Which options suit a tenant best?

Here is how the realistic options compare from a tenant's point of view.

Option	Landlord permission needed?	Fixes normal calls and SMS?	Moves with you?	Best when
Wi-Fi calling	No	Calls yes, depends on broadband; SMS and OTPs may still need mobile signal	Yes	You already have stable broadband
Porting to another operator	No	Only if that operator is stronger at your flat	Number moves, but coverage at your next flat is unknown	Another operator clearly works better in the same rooms
Mobile signal booster	Usually yes, for the outdoor antenna and cable	Yes, for calls, SMS and 4G data where outdoor signal exists	Yes, the kit can be removed and reinstalled	1-2 bars on the balcony or roof but poor signal indoors
Asking the society to fix it	Owner or RWA decides	Yes, if a building-wide solution is installed	No	Many flats in the building have the same problem

Wi-Fi calling has real limits, especially with OTPs and when the broadband goes down. Our comparison of signal booster vs Wi-Fi calling covers this in detail.

Can a tenant install a mobile signal booster in a rented flat?

In most cases, yes. A home booster is a small installation, not a structural change. Every SIGLIFT kit has five parts:

• the booster (amplifier), which sits indoors near a power socket
• an outdoor antenna, mounted where the signal is strongest, usually the balcony railing, a window frame or the terrace
• an indoor antenna, fixed on a wall or ceiling in the room that needs coverage
• coaxial cable connecting the antennas to the booster
• a power adapter

The only parts that affect the landlord's property are the outdoor antenna mount and the cable route. Installers can often run the cable through an existing gap, such as an AC pipe hole or a window frame, so little or no new drilling is needed. The installation guide shows what a typical setup looks like.

How do I ask my landlord for permission?

Landlords say yes more easily when they know exactly what will happen. Keep the request short and specific. For example:

"The mobile network inside the flat is very weak and calls keep dropping. I'd like to install a mobile signal booster at my own cost. It needs one small antenna on the balcony railing, one cable through the existing AC hole, and a small indoor unit on the bedroom wall. Nothing structural changes, and I'll remove it and restore everything when I move out."

If the outdoor antenna has to go on a shared terrace, the society or RWA may also need to agree. Ask before installation day, not on it.

What to agree in writing

• Where the outdoor antenna and cable will go
• That you will remove the kit when you vacate
• Who fills any small hole made for the cable

A short WhatsApp message confirming these points is enough, and it protects your security deposit.

Will my booster work when I shift to another flat or city?

The kit itself moves easily. Whether it works at the new place depends on three things.

1. Outdoor signal at the new flat. A booster amplifies existing signal. It cannot create signal where there is none. Before you shift, check that the new balcony or roof gets at least 1-2 bars.
2. Operators and bands. Typical bands are Jio 850/1800/2300 MHz, Airtel 900/1800/2100/2300 MHz, Vi 900/1800/2100 MHz and BSNL 900/2100 MHz, but these vary by telecom circle. If you might switch operators, live with flatmates on different SIMs, or move to another city, an all-operator model is the safer choice.
3. Cable length. The distance from the outdoor antenna to the booster may be longer at the new flat. Extra cable is available: LMR-300 at ₹120/metre and LMR-400 at ₹160/metre.

Moving the kit, step by step

1. Switch off and unplug the booster before you disconnect any cable.
2. Remove both antennas and coil the cable loosely without kinking it.
3. Restore the old flat as you agreed with the landlord.
4. At the new flat, find the strongest outdoor spot first, then plan the cable route.
5. Keep the outdoor and indoor antennas well apart, and connect the cables before powering on.

SIGLIFT's 24x7 technical support can help you plan the reinstallation over a call or WhatsApp.

When will a booster NOT help a tenant?

Being honest about this saves you money.

• No signal anywhere outside. If the balcony, windows and terrace all show no usable signal, a booster has nothing to amplify.
• Congestion. If you have full bars but data is slow only at peak hours, the tower is overloaded. A booster cannot add tower capacity.
• No permitted spot for the outdoor antenna. If the landlord refuses every outdoor or window position, ask whether a window-side spot inside the flat gets usable signal. If none does, rely on Wi-Fi calling instead.
• 5G speeds. SIGLIFT boosters amplify 2G, 3G and 4G/LTE, not 5G. 5G phones still benefit, because calls run over 4G VoLTE and phones fall back to 4G indoors, but the booster will not give you 5G speeds. The 5G cell booster page explains this.

Which SIGLIFT kit suits a rented flat?

Most tenants need a compact setup for a 1BHK, 2BHK or a PG room, and want it to keep working after a move or a change of SIM. Here is how to choose:

• 1BHK, 2BHK or a few rooms: the SL-91 all-operator booster kit covers about 1,500 sq.ft and works for flatmates on different operators.
• Everyone on Jio or Airtel 4G, larger flat: the SL-8518-23B covers about 5,000 sq.ft. It is less flexible if you later switch to Vi or BSNL.
• Large rented duplex, villa or a whole PG floor: the SL-850 27dB all-operator booster covers up to 10,000 sq.ft.
• Weak signal in a second room: add an indoor antenna with a 2-way splitter instead of buying a second kit.

You can compare every model on the booster kits page, or read more about network boosters for homes.

SIGLIFT has completed 9,800+ installations across 19+ states and UTs. Every kit comes with a 1-year warranty, free shipping across India, cash on delivery and 10-day returns. Prices are quoted after a free consultation, so you only pay for the kit your flat actually needs.

Frequently asked questions

Do I need my landlord's permission to install a signal booster?

It is good practice to ask, because the outdoor antenna and cable touch the landlord's property and sometimes shared areas. Most landlords agree when the request is specific and you promise to restore everything. Confirm the details on WhatsApp so there is no dispute over the deposit later.

Does installing a booster require drilling walls?

Often very little. The cable can usually go through an existing AC pipe hole or along a window frame, and the antennas mount with small brackets. The installer will confirm the route before starting.

My flatmates use different SIM cards. Will one booster work for all of us?

Yes, if you choose an all-operator model such as the SL-91 or SL-850, and there is usable outdoor signal for each operator. Operator-specific models only amplify the bands of the operators they are built for.

Can I take the booster to a flat in another city?

Yes. The kit can be uninstalled and set up again. Check the outdoor signal at the new place first, and remember that operator bands vary by telecom circle. An all-operator kit gives you the most flexibility.

What if the booster does not work in my flat?

Start with a free consultation so the kit is matched to your outdoor signal and operator before you buy. If it still does not suit your flat, SIGLIFT offers 10-day returns, and 24x7 technical support can help with antenna placement, which solves most problems.

Tired of stepping onto the balcony for every important call? Message SIGLIFT on WhatsApp or call +91-9650237601 for a free consultation. Share your city, operator and how the signal looks on your balcony. You can also use the Signal Booster Finder to see which kit fits your rented flat in a few clicks.