PhoneLifespan

iPhone 15 vs GT 6T

vs

Winner

Apple iPhone 15

Lifespan decides this one: the iPhone 15 is supported until Sep 2030 at $8.40 per month of safe use, while the GT 6T runs out in May 2028 ($14.56/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: iPhone 15 62 · GT 6T 72 methodology

The lifespan decider

When specs are close, support length decides it — this is what each phone costs per month of safe use.

Apple iPhone 15 $430
Safe to buy$8.40/mo
2023◆ Buy-by Sep 20282030
Realme GT 6T $340
Buy with care$14.56/mo
2024◆ Buy-by May 20262028

Category by category

Display
iPhone 15 50GT 6T 90

The GT 6T's screen is the better one — 6.78-inch ltpo amoled, 1.5k, 120hz, up to 6000 nits peak, gorilla glass victus 2.

Performance
iPhone 15 80GT 6T 78

Performance is a wash — same chip tier.

Camera
iPhone 15 62GT 6T 67

The GT 6T has the stronger camera system — same lens count, higher-grade sensors.

Battery
iPhone 15 47GT 6T 90

5,500mAh vs 3,349mAh — the GT 6T lasts longer between charges.

Software longevity
iPhone 15 61GT 6T 28

The iPhone 15 is supported until Sep 2030 — 28 months longer than the GT 6T.

Value
iPhone 15 62GT 6T 72

Overall value goes to the GT 6T at $14.56 per month of safe use.

Full spec table
SpeciPhone 15GT 6T
Price (street)$430$340
Display6.1-inch Super Retina XDR OLED, 60Hz, Dynamic Island, up to 2000 nits peak6.78-inch LTPO AMOLED, 1.5K, 120Hz, up to 6000 nits peak, Gorilla Glass Victus 2
ChipsetApple A16 BionicQualcomm Snapdragon 7+ Gen 3 (4nm)
RAM6GB8GB/12GB
Storage128GB/256GB/512GB128GB/256GB/512GB
Battery3,349 mAh5,500 mAh
ChargingWired ~50% in 30 min with 20W+; MagSafe 15W wireless120W wired (50% in 10 min)
Rear cameras48MP main, 12MP ultra-wide50MP main, 8MP ultra-wide
Dimensions147.6 × 71.6 × 7.80 mm162 × 75.1 × 8.7 mm
Weight171 g191 g
Water resistanceIP68IP65
Supported untilSep 2030May 2028

Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.