Why Choose Keith Thomas
• 20 years of experience as a Senior Apple Support Specialist at Apple Computer UK.
• Former Apple Computer UK Mac Support Specialist and Apple Authorised Service Provider background.
• Independent since 2010 for on‑site Apple Support Service – no call centres, no outsourcing.
• 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 Storage and System Data Support in London and the South East UK
What this page covers
This guide explains why iPhone System Data (previously called “Other”) becomes too large, why it can suddenly grow to 20–80GB, 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 System Data problems
These are the issues Keith Thomas sees most often during on‑site visits:
• iPhone System Data too large
• iPhone System Data taking 20–80GB
• iPhone System Data growing rapidly
• iPhone System Data not clearing
• iPhone System Data too large after update
• iPhone System Data too large after restore
• iPhone System Data too large due to Messages
• iPhone System Data too large due to iCloud Photos
Quick checks you can do yourself
These steps solve around 40% of System Data issues.
Check 1 – Restart the iPhone
Check 2 – Turn off and on iCloud Photos
Check 3 – Delete Safari website data
Check 4 – Delete old Messages attachments
Check 5 – Offload unused apps
iPhone System Data too large
This usually means:
• Cached files not clearing
• Messages attachments stored locally
• iCloud Photos downloading originals
• Safari and Mail caches growing
Try:
• Clearing Safari website data
• Deleting large Messages attachments
• Turning on “Optimise iPhone Storage”
System Data taking 20–80GB
This usually means:
• iCloud Photos downloading full‑resolution images
• Messages storing years of photos and videos
• Large app caches (social media, streaming apps)
Try:
• Settings → Photos → Optimise iPhone Storage
• Deleting large Messages threads
• Offloading apps with large caches
System Data growing rapidly
This usually means:
• iOS storage calculation bug
• App cache corruption
• iCloud sync loop
Try:
• Restarting the iPhone
• Updating to the latest iOS version
• Resetting iPhone settings (not data)
System Data too large after update
This usually means:
• Temporary iOS storage bug
• Update files not deleted
• System caches not cleared
Try:
• Restarting the iPhone
• Deleting the update file (if available)
• Updating to the latest iOS version
System Data too large after restore
This usually means:
• Corrupted backup
• iCloud sync loop
• Messages or Photos re‑indexing
Try:
• Leaving the iPhone plugged in overnight
• Checking iCloud Photos status
• Restarting the iPhone
When DIY stops working
You should get on‑site help if:
• System Data will not reduce at all
• System Data grows every day
• System Data is over 30GB
• System Data is full after update or restore
These issues usually require:
• iPhone storage and System Data optimisation
• iCloud Photos and Messages configuration repair
• App cache and system cache diagnostics
• iPhone configuration repair
On‑Site iPhone Support – London & South East UK
If your iPhone System Data is too large, 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 System Data and storage issues
• iCloud Photos and Messages optimisation
• iPhone storage and System Data diagnostics
• iPhone configuration and repair
Book on‑site help in London and the South East UK
If your iPhone System Data is too large, 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