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iPhone Battery Draining Fast – How to Fix It 2026 Guide

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 Battery and Software Support in London and the South East UK

What this page covers

This guide explains the most common software‑related reasons why an iPhone battery drains quickly, 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)

This page focuses on software issues only. Keith Thomas does not offer hardware repairs.

The most common battery drain problems

These are the issues Keith Thomas sees most often during on‑site visits:

• iPhone battery draining fast

• iPhone battery draining overnight

• iPhone battery draining after update

• iPhone battery draining due to iCloud Photos

• iPhone battery draining due to Mail fetch

• iPhone battery draining due to background apps

• iPhone battery draining due to Apple Account issues

• iPhone battery draining due to location services

Quick checks you can do yourself

These steps solve around 40% of battery drain issues.

Check 1 – Restart the iPhone

Check 2 – Turn off Background App Refresh

Check 3 – Turn off Location Services temporarily

Check 4 – Turn off Bluetooth if not needed

Check 5 – Update to the latest iOS version

iPhone battery draining fast

This usually means:

• Background apps running continuously

• iCloud sync loop

• Mail fetch loop

Try:

• Turning off Background App Refresh

• Turning off Mail fetch temporarily

• Restarting the iPhone

iPhone battery draining overnight

This usually means:

• iCloud Photos indexing

• Messages indexing

• App background activity

Try:

• Leaving the iPhone plugged in overnight

• Turning off Background App Refresh

• Checking iCloud Photos progress

iPhone battery draining after update

This usually means:

• iOS re‑indexing photos and messages

• Temporary iOS battery bug

• Background processes running

Try:

• Leaving the iPhone plugged in overnight

• Updating to the latest iOS version

• Restarting the iPhone

iPhone battery draining due to iCloud Photos

This usually means:

• Photos uploading or downloading

• iCloud sync loop

• Large photo library indexing

Try:

• Checking iCloud Photos progress

• Turning on “Optimise iPhone Storage”

• Restarting the iPhone

iPhone battery draining due to Mail fetch

This usually means:

• Mail app stuck fetching

• Mail server issue

• Apple Account sync delay

Try:

• Turning off Mail fetch temporarily

• Restarting the iPhone

• Re‑adding the Mail account

When DIY stops working

You should get on‑site help if:

• The battery drains extremely fast

• The battery drains overnight

• The battery drains after update or restore

• Battery drain stops on another device but not your iPhone

These issues usually require:

• iPhone battery and software diagnostics

• iCloud Photos and Mail configuration repair

• iOS update and background process optimisation

• iPhone configuration and repair

On‑Site iPhone Support – London & South East UK

If your iPhone battery is draining fast, 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 battery and software issues

• iCloud Photos and Mail optimisation

• iOS update and background process diagnostics

• iPhone configuration and repair

Book on‑site help in London and the South East UK

If your iPhone battery is draining fast, 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