How can I get the new iOS update on my iPhone?

Hello,

"my phone is glitching every day" ??? We could be more helpful if you would provide more detail.

Anyway, see this to upgrade to the latest version of iOS:

Update your iPhone, iPad, or iPod touch

Good luck.

jakiya ~ What model of iPhone is it?...

Settings > General > About > Model Name

And what version of iOS is it running?...

Settings > General > About > iOS Version

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How can I get the new iOS updates on my iPhone