I will explain in detail and show you what exactly we are getting different on both of them at almost the same price.
So, No. 1. In Mi TV We are getting Full HD resolution i.e. 1920x1080 but in TCL we are getting Ultra Hd 4K resolution i.e. 3860 x 2160.
2. The refresh rate of both the MI TV & TCL TV is 60 hertz.
3. The MI TV has 3 HDMI ports to connect a set-top box, Blu Ray players, gaming console and 3 USB ports to connect hard drives and other USB devices while the TCL TV has 2 HDMI ports to connect a set-top box, Blue Ray players & 1 USB ports to connect hard drives and other USB devices.
4. The Mi TV has 20 watts output and DTH HD sound, while the TCL TV has 20 watts output sound and nothing has mentioned about DTH sound.
5. The Mi TV has Smart TV Feature Built-In Wi-Fi, PatchWall, Netflix, Prime Video, Disney+Hotstar, and more. Android TV 9.0, Google Assistant + Data Saver and the same in TCL TV including 4K Android TV + HDR, AI-Google Assistant, Google Cast + T-cast, Bluetooth with Android 9.0.
6. The Mi TV has LED Panel, Vivid Picture engine, and the TCL TV A+ Grade Panel, UHD, HDR 10, and Micro dimming.
7. The MI TV will provide a 1-year warranty on product and 1 year extra on Panel Installation/Wall mounting while the TCL TV provides you 18 months of warranty provided by TCL from the date of purchase.
So overall the conclusion is that the difference between the MI Full HD 43inch TV and the TCL UHD 43inch UHD TV is the Resolution. The TCL TV does give you Ultra HD Resolution but it does not have 3 USB port as the MI TV is providing.
So it's totally up to you which one you want for your home.
Price: MI 4A 43Inch Rs 22.499/- until now | TCL UHD Rs 24,990/-