Why isn't my iPhone 5c working?

Okay well,
In beginning of summer we went to the beach and my sister had her iPhone in her pocket and ran into the water.
We've waited a long time for it to dry, we waited like 2 weeks and we put it in a bag of rice too.
When we believed it was completely dry, we connected it to the charger and all it did was flash the apple logo and then turn back off. It then repeated the process over and over again.
It's September and it's still doing this whenever we connect it.
Does anyone know why?

In advance i thank you for answering.

Because it's damaged! See your local cell service provider.

If the phone was on at the time of being submerged in water then there's a huge chance that it has fried the motherboard, take it to a nearby phone repairing shop and get them to look at it, but don't get your hopes up, a fried motherboard is not a cheap part to replace.

It's a rubbish phone

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