Battery not charging quickly
Battery slow charging
crwdns2934109:0crwdne2934109:0
Battery slow charging
crwdns2934109:0crwdne2934109:0
We could probably use a bit more information about what you may have tried and I would immediately think either the charge port needs some cleaning, or you could benefit from a more powerful charger, but there's actually a whole page dedicated to troubleshooting this exact issue.
If you want some more thorough steps, take a look at the iPhone Slow Charge troubleshooting page.
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How powerful is the charging brick that you are using? Lower power ones tend to charge your phone slower.
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