Question 1

How do you securely wipe a device before selling or disposing of it?

Accepted Answer

By **using encryption rather than overwriting**, which is faster, more thorough and — on modern storage — the only method that actually works reliably.

**Why overwriting no longer works properly.** On a traditional hard drive, writing over data physically replaced it. On **SSDs and phone storage**, the controller manages where data physically sits: **wear levelling** spreads writes across cells, over-provisioning reserves hidden capacity, and remapping means blocks you cannot address may still hold data. **A software overwrite cannot reach them.**

**What works instead: encrypt, then destroy the key.** If the whole drive is encrypted and the key is discarded, the remaining data is unreadable regardless of where it physically sits. **This is what a modern factory reset actually does** — it is a cryptographic erase, which is why it takes seconds rather than hours.

**Phones and tablets:**

**Sign out of the account first**, which is the step that matters most practically — **a device left signed in is activation-locked and useless to a buyer**, and this is the commonest complaint in second-hand sales.

**Remove the SIM and any memory card**, which are not wiped by a reset.

**Then factory reset**, which performs the cryptographic erase.

**Deregister** from the account's device list afterwards.

**Computers:**

**Confirm full-disk encryption is enabled**, and if it is not, **enable it and let it complete before wiping** — otherwise a reset does not have a key to destroy.

**Deactivate licensed software** and sign out of accounts.

**Use the built-in erase and reinstall**, which handles the secure erase correctly for that hardware.

**What to do about things a wipe does not cover:**

**Cloud accounts still linked**, which persist regardless of the device.

**Browser profiles synced elsewhere.**

**Two-factor authenticators**, which must be migrated first.

**Printers, routers and smart devices**, which store network credentials and account details and have their own reset procedures — **routinely forgotten, and they hold your Wi-Fi password in plain form.**

**Physical destruction** is appropriate for a failed drive that cannot be erased — and for a working device, recycling or resale is the better outcome environmentally.

Question 2

How do you move everything to a new phone?

Accepted Answer

By transferring in the right order and knowing which things do not transfer automatically — because the standard migration tools handle most of it and silently miss the few items that are hardest to

Question 3

What happens to your data when a subscription lapses?

Accepted Answer

It depends entirely on the service, and the answer sits in terms nobody reads — with outcomes ranging from full access retained in read-only form to deletion after a short grace period, which is why

Question 4

What do you actually do when you are locked out of an account?

Accepted Answer

Work through the recovery routes in order of reliability — and the critical insight is that account recovery almost always runs through something else you control, which means the real problem is

Question 5

How do files get corrupted?

Accepted Answer

A file is corrupted when its stored bytes no longer represent valid data for its format. The causes are varied, and most are about interrupted writes rather than data spontaneously degrading.

Question 6

How to resolve device storage issues?

Accepted Answer

To resolve device storage issues, delete unnecessary files, clear app cache, uninstall unused apps, use cloud storage, optimize media files, or perform a factory reset.

Question 7

What should you actually do first if you think you have malware?

Accepted Answer

Disconnect from the network, then work through a sequence — because the instinct to start deleting things immediately can destroy evidence, spread the problem, or do nothing at all while the real

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