alejandra16v Said:
"Brightness on IPhone : The brightness on my iPhone is at the highest it can be but my screen is really dim. I’ve tried turning off the auto brightness and restarting my phone/ updating it and nothing works. What do I need to do for my iPhone to stop dimming it’s screen even if the brightness is all the way up?"
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Troubleshooting a Dimming iPhone Screen.
Get this Serviced:
Sounds like all the basics were tried here. So, you may want to take this in for service. You have a one-year, out-of-the-box, limited-warranty with this. So, see if it can be fixed, and if it would be of no cost to you (if found to be faulty device)
To Set Up a Genius Bar Appointment:
Set up a Genius Bar Appointment (GBA) at your local Apple Store.
- Siart here:Â Genius Bar Reservation and Apple Support Options - Apple
- Scroll down to the Bottom of the page
- Click the Get hardware help button
- Proceed from there as necessary.
What to Bring:
Important: Bring some notes, your original proof of purchase, and create a backup prior to bringing it in. Though not required, bring the power adapter along, in case theirs does not work.  See More here: Get your iPhone, iPad, or iPod touch Ready for Service - Apple Support