Why Choose Keith Thomas
• 20 years of experience as a Senior Apple Support Specialist at Apple Computer UK HQ.
• Former Apple Computer UK Mac Support Specialist and Apple Authorised Service Provider background.
• Established and Independent since 2010 for on‑site Apple Support Service – no call centres, no outsourcing, no hardware repairs. Over 25,000+ Apple problems resolved. Unique on-site Apple Support Service. backed up with Independent Apple Telephone Support Assistance.
• Trusted by home users, small businesses, and professionals across London and the South East UK.• Clear, honest, software‑only support. No Hardware Repairs. Expert Apple Consultancy Service.
On‑site iPhone and iOS Update Support in London and the South East UK
What this page covers
This guide explains the most common reasons why an iPhone cannot update iOS, the steps you can try yourself, and when it’s time to get professional on‑site help. It applies to:
• iPhone 17 / 17 Pro / 17 Pro Max / iPhone Air
• iPhone 16 / 16 Pro / 16 Pro Max
• iPhone 15 / 15 Pro
• iPhone 14 / 14 Pro
• iPhone 13 / 13 Pro
• iPhone 12 / 12 Pro
• iPhone SE (2nd and 3rd generation)
And all iOS versions including iOS 17, iOS 18 and the latest iOS releases.
The most common iOS update problems
These are the issues Keith Thomas sees most often during on‑site visits:
• iPhone cannot update iOS
• iPhone stuck on “Preparing Update…”
• iPhone stuck on “Verifying Update…”
• iPhone stuck on “Downloading…”
• iPhone says “Unable to Install Update”
• iPhone update fails repeatedly
• iPhone cannot update due to storage
• iPhone cannot update over mobile data
• iPhone cannot update after reset
Quick checks you can do yourself
These steps solve around 50% of iOS update issues.
Check 1 – Restart the iPhone
Check 2 – Connect to a reliable Wi‑Fi network
Check 3 – Charge the iPhone to at least 50%
Check 4 – Turn off Low Power Mode
Check 5 – Make sure you are signed in to your Apple Account
iPhone cannot update iOS
This usually means:
• Insufficient storage
• Network connection issue
• Apple Account not fully signed in
Try:
• Freeing storage space
• Restarting the iPhone
• Checking Wi‑Fi connection
iPhone stuck on “Preparing Update…”
This usually means:
• Update file corrupted
• iOS background process stuck
• Storage calculation delay
Try:
• Restarting the iPhone
• Deleting the update file and downloading again
• Leaving the iPhone plugged in overnight
iPhone stuck on “Verifying Update…”
This usually means:
• Apple server delay
• Network interruption
• iOS verification timeout
Try:
• Restarting the iPhone
• Connecting to a different Wi‑Fi network
• Trying again later
iPhone says “Unable to Install Update”
This usually means:
• Storage too low
• Update file corrupted
• Apple Account not fully signed in
Try:
• Freeing storage space
• Deleting the update file
• Restarting the iPhone
iPhone cannot update due to storage
This usually means:
• System Data too large
• iCloud Photos downloading originals
• Large app caches
Try:
• Offloading unused apps
• Clearing Messages attachments
• Restarting the iPhone
iPhone cannot update over mobile data
This usually means:
• iOS updates require Wi‑Fi
• Network restrictions
• Data saver mode enabled
Try:
• Connecting to Wi‑Fi
• Turning off Low Data Mode
• Restarting the iPhone
iPhone cannot update after reset
This usually means:
• Apple Account not fully signed in
• Network configuration issue
• iOS activation delay
Try:
• Signing in to your Apple Account again
• Restarting the iPhone
• Connecting to a different Wi‑Fi network
When DIY stops working
You should get on‑site help if:
• The iPhone will not update at all
• The update fails repeatedly
• The iPhone is stuck on Preparing or Verifying
• The iPhone cannot update after a reset
These issues usually require:
• iPhone update and configuration repair
• Apple Account and iCloud checks
• Network and Wi‑Fi diagnostics
• Storage and System Data optimisation
On‑Site iPhone Support – London & South East UK
If your iPhone cannot update iOS, Keith Thomas provides an often same‑day on‑site support service across:
• Central London
• West, North, South and East London
• Surrey
• Berkshire
• Hampshire
• Wiltshire
Keith Thomas is an Apple Support Specialist in:
• iPhone iOS update issues
• Apple Account and iCloud configuration
• Network and Wi‑Fi troubleshooting
• iPhone configuration and repair
Book on‑site help in London and the South East UK
If your iPhone cannot update iOS, Keith Thomas can visit your home or office and get everything working again.
Keith Thomas – Apple Support Specialist
Established 2010 – Open 09:30–20:30, 7 Days
Contact Keith Thomas by Telephone: 07800 940756 or by Text to: 07800 940756, or simply complete an online website contact form 24/7