Phone-to-phone transfers have gotten genuinely good — the built-in tools move most of your life in under an hour. The pain lives in the exceptions: banking apps, WhatsApp history, two-factor codes. This guide covers the main path for each direction, then the exceptions that catch everyone.
Android → Android
During new-phone setup, choose “Copy apps & data,” connect with a cable (fastest and most reliable) or use wireless/cloud restore from your Google backup. Apps, app layout, Wi-Fi passwords, photos (if Google Photos is backing up), messages and call history all come across. Samsung-to-Samsung adds Smart Switch, which is excellent and moves even more. Before starting: ensure a fresh Google backup exists (Settings → Google → Backup → Back up now) and both phones are charged.
iPhone → iPhone
Apple’s Quick Start is the gold standard: bring the phones near each other, follow prompts, and either restore from a fresh iCloud backup or do direct device-to-device transfer (preferred — it moves everything including app data without needing iCloud space). eSIMs transfer in-process on recent iOS versions. Do an iCloud backup the night before anyway, as insurance.
Android → iPhone
Use Apple’s “Move to iOS” app during iPhone setup — it transfers contacts, messages (including WhatsApp chats if you accept its prompt), photos, and free apps’ equivalents. Expect a longer process and some app-by-app rebuilding afterward. Paid Android apps don’t transfer; subscriptions tied to Google Play need re-subscribing through Apple or the web.
iPhone → Android
Pixels and Samsungs offer cable-based switch tools during setup that pull photos, contacts, calendars and messages off an iPhone. The critical pre-step: turn off iMessage (Settings → Messages) before swapping the SIM, or texts from other iPhones will vanish into the iMessage void for days. Apple has a deregistration page if you forget.
The exceptions everyone hits
WhatsApp: same-platform moves are seamless via backup (Google Drive or iCloud); cross-platform moves work through the official transfer flow but require doing it during setup — don’t skip it planning to “do it later.”
Two-factor authenticator apps: the classic disaster. Google Authenticator now syncs to your account; Authy syncs natively. But check every account in your authenticator before wiping the old phone — and export/transfer codes explicitly. This is the #1 cause of post-transfer lockouts.
Banking and payment apps: most detect new devices and demand re-verification; have your ID and registered SIM ready. Transit cards and digital wallets often need manual re-adding.
eSIMs: carrier-dependent. Many transfer in-flow now; some still require a carrier call. Check before wiping the old phone.
The golden rule
Keep the old phone intact and powered for a full week after switching. Every forgotten code, app login and stray photo is recoverable while it lives — and a brick the moment you factory-reset it early.
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