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Released in May of 2020, Model Numbers: SM-A217F/DS (Global), SM-A217F/DSN (Russia), Processor: Exynos 850, 3GB/4GB RAM, 6,5" inches display, 5000 mAh battery with 15W fast charging and USB type C.

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Broken screen flex cable

The screen of my phone it seems to be in a good condition but I broke the flex cable that connects the phone with the screen how do I fix it?

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That depends on what part of the ribbon cable you tore. The A21s has a 2-part ribbon cable that connects with a press connector.

Please see this photo:

Block Image

(Image Credit: YouTube Phone Repair Master - https://www.youtube.com/@phonerepairmast...)

If you tore the smaller portion at the bottom (red), you need a new screen. That smaller ribbon cable connects directly to the LCD layer and cannot be replaced.

If you tore the larger part that connects between the smaller ribbon cable and the motherboard (blue), you can simply replace that cable. You should be able to find one online for about $10usd (including shipping).

For example: https://www.ebay.com/itm/254969168005

Just make sure you get one that is compatible with your model. This one linked is compatible with A217F, but it may not work with an A217U, if that is what you have. Find one that is compatible with your exact phone model and replacement is a breeze.

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