Forget Passcode

What if I forgot my passcode lock to my iPhone and now I can't get into my phone and am trying to see if I can either log in to my iPhone a different way or reset my phone, erase the data  and then back it up again and allow me to reset my pass code agai

• when you forget your passcode lock to your phone you not able to access it to reset from setting menu
• Other way to reset your phone are : https://support.apple.com/en-us/HT201252
• With the above method you will lose all informations 
• There is no way for you to back up information if you forget your iPhone passcode 
• Backup need to be done before this had happened.
• However if you have your iCloud backup turn on you may be able to get some information back up to your last back up.

Good luck!

See If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled https://support.apple.com/en-us/HT204306

 Also, if you are in activation lock, see:

Turn off Activation Lock  https://support.apple.com/en-us/HT201441  “If you erase your device without signing out of iCloud first, it might still be protected by Activation Lock. Whether you erased your own device or bought one from someone else, you can turn off Activation Lock by entering the correct Apple ID and password.”

 If you can't activate your iPhone https://support.apple.com/en-us/HT201407 "If your iPhone can't be activated or an alert says the activation server is unavailable or the SIM card is unsupported, learn what to do.”

Ultimately you are likely to have to Use recovery mode to restore your iPhone.