When you purchase and receive the phone, can it be updated to ios 11? And also when are you bringing iphone 6s plus back in stock
You would be able to download the latest iOS version yourself.
Pre-Owned phones are mostly sourced from our members and other recycling sources, this does mean the stock is limited and there is little visibility on when or if a specific model will be back in stock. Though we do recommend checking back on site mid-week.
All our pre-owned phones come unlocked, ready for any UK network SIM.
For all the information you need about buying a pre-owned phone from giffgaff, hope this helps