Why is the home screen on my iphone blurry?

Why is the home screen on my iphone blurry?

It's too old

Possibly moisture in phone if was in the rain or laid phone down n surface was wet. Coud try putting in rice and let it sit for couple hrs. If not from moisture try a restart on phone and if that don't work try factory reset phone. If all fails it may be the pixels is going out on phone

Is it dirty?
Bad screen protector

WEAK BATTERY?

Can't really say anything based on what you said.

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