Different phone but same sim number so will I have my old contacts stored or no?

My iphone 6s broke so I will be having an iphone 5 instead as a temporary phone. I can easily ask through social media numbers yet I'm just wondering. Will have phone on Thursday.

If not all on the sim and sign in with same email linked to your account, on set up / select from back up and your 6s… Now all apps which work on the 5 will install, all contacts linked to your account shall be put back if you did not override the 6s default settings so expect no issues at all. Apple use the id sign in info to back the contacts up, i have several iphones and my contacts are there regardless of sim number, you said saved anyway so just log in the apps and no change, all as 6s:-)

At least you've saved or copies all the contacts in SIM card before changing the phone

No. Your info is not stored on the sim except for the phone number and your mobile provider.