7 smartphone features hiding in plain sight — and how to actually use them

Open the tool. On iPhone, it's called "Level" and found in the Measure app (or in the Compass app if you're running iOS 12 or ...
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Samsung's A17 and A11+ Raise Questions Samsung Needs To Answer

However Samsung kept whittling it down even stripping the slot from the A5,3 series of devices leaving the slot on the A16.