Check Settings > Battery > Battery Health . Aim for 85% or higher.
The iPhone X was discontinued by Apple in 2018. Finding one in a physical retail store today requires looking beyond official Apple Stores. Where to Buy In-Store
Ensure the previous owner has signed out completely. Pros and Cons of the X Today iphone x buy in store
Stores like GameStop or local independent repair shops often carry refurbished stock.
These frequently have older iPhone models available for immediate pickup. Check Settings > Battery > Battery Health
Look for "ghosting" or "burn-in" on the OLED display.
Best Buy or Walmart occasionally have "Pre-Owned" or "Renewed" units in their clearance sections. What to Check Before Buying iphone x buy in store
Test this immediately. It is expensive to fix if broken.