The short answer
Check the signal strength the TV reports, not what your phone shows standing next to it, because TV antennas are far worse than phone antennas. Reserve a fixed IP address for the TV in the router, set 2.4GHz to 20MHz width, and if the TV is within reach of a cable, wire it, which ends the problem permanently.
A television is one of the worst-placed Wi-Fi devices in a house. It sits low down, often in a cabinet, with a large metal panel directly behind its antenna, frequently at the opposite end of the house from the router. Add an antenna designed to cost as little as possible, and intermittent connection problems are unsurprising.
Step 1: find out what the TV actually sees
Most TVs report signal strength in their network settings. Look for it and note the figure or the bar count. Do not substitute your phone’s reading, because a phone has a far better antenna and will show a usable signal where a TV has nothing.
If the TV reports a weak signal, the problem is coverage and the rest of this article’s settings will not save you. If it reports a strong signal and still disconnects, the cause is addressing, band steering or the TV’s software.
Step 2: the settings that fix addressing problems
Reserve a fixed address for the TV
In the router’s DHCP reservation list, tie the TV’s MAC address to a fixed IP. This eliminates disconnections caused by lease expiry and address conflicts, which is a very common cause of a TV that drops every few days.
Enlarge the DHCP pool
A household with many smart devices can exhaust a small pool, leaving the TV without an address after a router restart.
Set 2.4GHz channel width to 20MHz
Simple devices handle 40MHz channels poorly, and in a populated area the wider channel causes more interference than it gains.
Choose a clear channel
Channels 1, 6 or 11 on 2.4GHz, whichever has fewest neighbours in the evening.
Set security to WPA2 or WPA2/WPA3 mixed
Older TVs fail on WPA3-only networks, sometimes intermittently rather than outright.
Split the bands or give the TV a fixed band
If band steering is pushing the TV between 2.4 and 5GHz, it will drop during the switch. Naming the bands separately and joining the TV to one is a reliable fix.
5GHz carries more data and travels less far. For a TV streaming 4K, 5GHz is worth using if the signal is strong, and 2.4GHz is the better choice if the TV is far from the router, since a stable 2.4GHz connection beats an intermittent 5GHz one.
Step 3: improve the signal
- Move the router, not the TV. Getting it out of a cupboard, off the floor and towards the centre of the house helps every device.
- Add a mesh node or access point in the room or the hallway outside it. This is the definitive fix for a weak signal and it improves the rest of the house too.
- Get the TV’s antenna away from metal. A TV wall-mounted with its back against a wall, or in a metal-framed unit, is a difficult case. Even a few centimetres of clearance helps.
- Check what else is in the cabinet. A games console, a soundbar and a set-top box all radiate and all compete.
Step 4: wire it
A television never moves. It is the single best candidate in the house for a cable, and a wired connection removes every cause discussed above at once. Three ways to do it:
- A direct Ethernet run, using flat cable along the skirting if necessary. Cheapest and best.
- Powerline adapters, which carry the data over the mains wiring. Performance varies by house and is usually more than enough for streaming.
- A mesh node with an Ethernet port beside the TV, which gives the TV a wired link and improves wireless coverage in that room.
If the TV has no Ethernet port, which some do not, the streaming device attached to it may have one, and that is equally effective since the TV’s own apps are then unnecessary.
Step 5: the TV itself
- Update the firmware. Wi-Fi stability fixes are common in TV firmware updates.
- Restart properly, by unplugging from the mains for a minute rather than using the remote, which only enters standby.
- Turn off any eco or power saving network setting, which on some models disconnects Wi-Fi in standby and reconnects slowly.
- Check for a known fault by searching your model number with the words Wi-Fi dropping. Several manufacturers have had model-specific problems with published fixes.
- Consider a streaming stick. On an older TV, a modern streaming device with better Wi-Fi hardware often solves the problem completely, and costs far less than a new television.
Before rebuilding your network, check whether the problem is actually the streaming service rather than the connection. If the TV stays connected and only one app fails, that is an app or service issue, and the network is being blamed unfairly.
Why does my phone get good Wi-Fi next to the TV but the TV does not?
Phones have far better antennas and radios than televisions, which use the cheapest component that meets the specification. A signal that is fine for a phone can be marginal for a TV.
Should the TV use 2.4GHz or 5GHz?
5GHz if the signal is strong, for the extra bandwidth. 2.4GHz if the TV is far from the router, because stability matters more than speed for streaming, which needs relatively little bandwidth.
Will an Ethernet cable really fix it?
Almost always. A wired connection eliminates signal strength, interference, band steering and roaming problems in one step, and a television is the easiest device in the house to wire because it never moves.
Why does it disconnect only at certain times of day?
That pattern suggests interference or congestion, typically in the evening when neighbouring networks are busy. Changing channel usually helps more than anything else.
Are powerline adapters good enough for 4K streaming?
In most houses, comfortably. They struggle across separate consumer units and on old wiring, and where they work they are more stable than a long wireless hop.
The order
Read the signal the TV reports. Weak means add coverage or wire it. Strong but dropping means reserve a fixed address, narrow the channel width, pick a clear channel, and stop band steering from moving it. Update the firmware and restart from the mains. And if a cable can reach it, run one, because that ends the problem for good.
