Guide
How to pick the right TV size for your room, what LED, QLED and OLED really mean, which ports you need, and how long the software will be supported.
Walk into any electronics shop and you are met by a wall of glowing screens, each with a sticker promising "4K", "HDR" or "AI Picture". Under showroom lights they all look wonderful. Then the TV comes home and the problems appear: the screen feels too big for the room, the dialogue is muffled, or the one port you needed is missing. A few checks before you pay will save you money and regret.
Take a tape measure and check the distance from your sofa or bed to where the TV will sit. For a 4K set, a comfortable rule of thumb is to sit roughly 1 to 1.5 times the screen's diagonal away. That works out to about 1.4 to 2.1 metres for a 55-inch TV. In many Dhaka flats the living room offers less than 2.5 metres of viewing distance, so a 50- or 55-inch screen is usually plenty. A screen that is too large for the distance makes your eyes travel from corner to corner, which gets tiring over a long evening.
Decide early whether the TV goes on the wall or on a cabinet. For wall mounting, match the VESA pattern on the back of the TV (for example 200×200 or 300×300) with the bracket, and plan where the power and internet cables will run.
In a room flooded with daylight, a bright LED or QLED often looks better in practice. If evening films are the main use, OLED is worth considering.
Above 43 inches, 4K is now standard. But if most of what you watch is HD, the TV is simply scaling it up, so ask the shop to play an ordinary HD video and judge the upscaling yourself. If you watch sport or play games, a 100/120 Hz panel keeps fast motion smooth. Ask for the panel's native refresh rate rather than marketing numbers such as "Motion Rate 200".
A smart TV is a small computer. Whether it runs Google TV, webOS, Tizen or something else, ask how many years of security and app updates the maker provides. On some budget models popular apps stop working after a year or two. Another sensible route is a TV with a great picture plus a separate streaming device, which you can replace later without replacing the screen.
Thin TVs leave little room for speakers, so dialogue can sound thin. Play a drama or a news bulletin in the shop and listen. If the budget allows, a small soundbar transforms the experience.
Editor's note: Written and checked on 13 November 2026. Models and prices change quickly; confirm the official specifications before you buy.
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