From a distance, iPhone 12 and iPhone 13 are both flat-edged phones with 6.1-inch OLED screens. The question is not simply which generation is newer. Start with the photos, videos and apps you store today, then examine the battery and condition of the two actual used devices on offer.
Will 64GB work for you?
Apple lists iPhone 12 in 64GB, 128GB and 256GB versions, while iPhone 13 starts at 128GB. Check the exact variant in TECHBUY stock. A 128GB iPhone 12 can make more sense than a dearer iPhone 13 if the remaining improvements do not matter to you. A 64GB phone, however, can fill quickly with video, photos and large apps.
Look at storage usage on your current phone, then allow room for new media and updates over the next year or two. Buying enough space now is usually less frustrating than constant file cleanup.
Published battery hours are not a used-phone promise
Apple specifies up to 17 hours of video playback for iPhone 12 and up to 19 hours for iPhone 13 under its test conditions. Those figures help compare the designs when new; they do not predict the endurance of an individual used unit.
Ask to see battery health, any replacement history and performance during your normal tasks. A newer model with a weak battery, unusual heat or repeated midday charging may be less suitable than a clearly documented older phone.
Familiar screens, with camera differences
Both feature a 6.1-inch Super Retina XDR OLED screen. iPhone 13 has an A15 Bionic instead of the A14 in iPhone 12, and Apple added Cinematic mode for video. If you mainly message, take ordinary photos and watch media, inspect sample pictures instead of paying solely for one feature on a spec sheet.
Check for dead pixels, uneven colour or touch problems. Try front and rear cameras, video and speakers. On a used phone, poor focus or a problematic replacement screen can affect daily use more than a one-generation chip difference.
Choose the actual device, not only the model
Confirm storage, colour, cosmetic condition, Face ID, connectivity, account-lock status and the warranty of the unit to be delivered. Both models use Lightning, so check which cable, charger and accessories the order includes.
Lean toward iPhone 13 if you value its 128GB starting point and newer battery and video design. Lean toward iPhone 12 when you find the right storage, a sound unit and a price difference worth keeping. Neither choice removes the need to inspect the phone.
Compare these options
Conclusion
For a fair comparison, place two phones of similar storage and condition side by side. Check your current storage use, test the battery and cameras on the actual units, then compare current prices and warranty terms. The model year should inform the decision, not make it alone.
