Why are there little dots on my iPhone screen?

Dingusiphones Said:

"small green dots on my screen: I checked that too, I think my screen is damaged but I had that phone for only 4 months! Its really disappointing to see what a new iPhone is with Telus…"

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Coverage:

Given your location, you might have service with this. You have a one-year, out-of-the-box, limited-warranty with this.

Checking AppleCare:

Perform the following to see if you have coverage on this.

1. Get the Serial Number: Find the Serial Number or IMEI on your iPhone, iPad, or iPod touch - Apple Support
2. Enter the Serial Number here: https://checkcoverage.apple.com/.

Dingusiphones Said:

"small green dots on my screen: i got multiple screen dots even blue and red one on my screen! i always treated my phone like a baby, kept it clean and tryed to damage it the less possible, i have a screen protector and a case and it was a brand new phone and the model number starts with an M (witch means its brand new) (F: refurbished) (N: replacement)"

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Provide More on these Dots:

Are the lights on your screen? Or is it debris?

Remove the screen protector and check again.