How do I unlock the tape so I can erase the content?

It's quite easy. You can reach this aim through Settings app. Just follow below steps one by one.

You will also be able to reset iPhone to factory settings within your iPhone. You just need to go to "Settings > General > Reset" and then choose the categories you want to reset and then apply it. If you choose "Reset All Contents and Settings", then you will get all the files in your iPhone erased.

Once you tap on "Erase All Content and Settings", you will be asked to enter your Apple ID password. Next, you will see a Popup Message informing you that All media, data and settings will be erased from your iPhone. Click on Erase iPhone to factory reset iPhone 6 Plus.

For more methods, check: How to Restore iPhone 6 Plus to Factory Settings

There is no erase or delete, per-say...you have to re-record over any recordings on the tape in a silent room with the lens cap on.

Go to Settings / General / Reset / Erase All Content and Settings.

Follow these instructions to unlock your iPhone:

1. Check if your carrier offers unlocking. Only your carrier can unlock your iPhone.
2. Contact your carrier and request an unlock.
   • You may need to meet certain requirements to qualify for unlocking. This may take up to seven days.
3. Once you receive confirmation that your iPhone unlock has been processed, back up your iPhone.
4. Erase the contents of your iPhone.
5. Complete the setup assistant and restore your backup.

Do not use the computer to erase a memory stick. If your pics are safely on the computer and you want to completely erase the stick, use the format function in the camera.

Just click on Format for the DVD-RW disks only. The other types keep all files.

restore your iphone using itune 8.2.then jailbreak and unlock

While holding the 'Erase' button down, press the 'Rewind' or "Fast Forward' button. It will erase the tape while it rewinds or fast forwards.

How to repair IPhone 3g after Erase all content and settings can i help me thank s

Master Reset
Reset all options except unlock code, security code, and lifetime timer:

Go into Settings > Initial Setup > Master Reset

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Master Clear
Caution: Master clear erases all information you have entered (including phonebook and datebook entries) and content you have downloaded (including photos and sounds) stored in your phone’s memory. After you erase the information, you can’t recover it. Clear all settings and entries you made except SIM card information, erase downloaded pictures and sound files, and
reset all options except unlock code, security code, and lifetime timer:

Go into Settings > Initial Setup > Master Clear