Samsung J5

[DOLPHIN100]

My phone Samsung J5 has locked me out, asking for passcode I did not set

[BandOfBrothers]

Is it a pass code like a 4 digit pin to get into the phone ?

If so do you have any other entry security pass activated ?

As the 4 digit code is a security feature to protect the phone and it's contents tthen it's  designed to not be easy to get past.

Try logging into your Samsung Account via a laptop / tablet each other and reset the code that way.

Or try....

samsung-galaxy-j5-pro/faq/faq/i-have-forgotten-the-screen-lock-code-what-should-i-do. 

how-to-unlock-galaxy-j5-screen-if-you-forget-the-pin-pattern-or-password. 

forgot-pin-password-on-samsung-galaxy-j5-solution. 

🌈Stay Safe  🌈 

[AnnS]

Hi @DOLPHIN100 

Unless you have set a passcode, the phone may just be unresponsive or frozen.  Try the following advise from Samsung:  My Galaxy smartphone has frozen, how do I restart it? 

edited to add:  I would also try removing and reinserting the SIM, also Vodafone always recommend trying the SIM on an alternative phone.

[DOLPHIN100]

thank you all for the info, phone now unlocked, went on "find my phone", unlock. And voila,  I can now use my phone again.

Many thanks to all 

😁

[BandOfBrothers]

Glad that helped @DOLPHIN100 

The options via your Samsung Account are quite extensive and helpful.

🌈 Stay Safe  🌈.