This challenge is relatively unpopular but it's for a deep proof of uprightness or smartness whichever works for you.

Here we go:

Proposing this challenge to your partner is not preplanned, though he or she could have got wind of it from any source. He or she will surrender his phone unlocked or with passwords while you the challenger have the prerogative and the latitude to do whatever pleases you thereon (excluding engaging anyone on voice calls) for a maximum of 3 hours including sending "hi" and engaging suspicious numbers on your challenged partner's phone or social media handles accessible on the phone. If he or she needs to make a call on point if the challenge stay and wait while he or she does that or supervise immediate activity and not more. Requesting and insisting on a second phone call or another activity even if it is to receive an incoming call after proposing the challenge makes the challenged couple to fail the challenge no matter how important he she claims those activities are.

The turn of the other partner is not also known (if he or she survives his or her challenge ); it could be months later, maybe after the partner to be challenged returns from work, party or church on a certain day, whatever occasion or time the challenging partner sees as vantage when he or she will not be expecting it and not be on his or her guard. On the proposal of this challenge, the phone is surrendered unlocked or with passwords to the phone and all applications. All phones belonging to the challenged couple is surrendered irrespective of what use the phone is meant for whether they are one or ten. Time for the challenging partner must also be kept

This challenge has only been tested in suburb of a country in South America with great controversies. It is for the courageous and souled couples, who consolidate their trusts or smartness after the challenge. (Meticulous challenger even when he is returning a challenge cannot be outsmarted if he or she is patient and carefully probed for a vantage period or situation).

Warning: do not propose this challenge if you are not capable. I repeat, do not try it. The district mayor in the locality where it started passed a local legislation to ban it.

I can take questions