How to pair the Apple Watch with another iPhone

I was experiencing this problem when i had my phone on my desk and I would walk away from it. When I came back I found that the watch would refuse to re-pair with my phone again.

I found a quick way to force the watch to re-pair with my phone:

• Flick up on the watch face to get to the "Glances" menu
• Tap the airplane button to turn on Airplane mode
• Tap the airplane button again to turn off airplane mode
• Within a few seconds the watch will re-pair with the phone

To answer your first question: There are no limitations to having Activation Lock enabled on your Apple Watch, except for:

With Activation Lock, your Apple ID and password will be required before anyone can:

• unpair your Apple Watch from your iPhone,

• or pair and use your Apple Watch with a new iPhone.

– the above taken from Apple's support site –

But I don't know if those are considered disadvantages.

As for your second question, you can unpair the Watch from the iPhone by:

1. Launching the Settings app on your Watch
2. Select General
3. Tap Reset
4. Tap Erase All Content and Settings
5. Enter your password, if needed
6. Hit Continue