I defintely did not miss-typed a word and the mnemonic code should be correct, nonetheless I will try to enter it tomorrow with different order (as it was typed on a piece of paper in two columns, but I hardly doubt this will be the issue and words should be in different order).
We created only one HD account on the old phone, so this again should not be the problem.
I never rooted the phone and I dont think Im that experienced...this might be the solution, but I dont want to accidentaly wipe the data including not a small amount of BTC.

Thank you for your help 


I dont remember it, but I can normally open Mycelium on the old phone and read it 

I will look it up, thank you.

Thank you all again four your valuable input.
We tried it once again.
While having the old phone on hand, we installed mycelium on a new phone, after the startup we chose to reload from a backup by using 12 words/seeds (we didnt check something about password in the bottom).
After typing all 12 words, there was no notice saying that the backup was uploaded succesful like some of you metioned above and wallet shown on the new phone is different than on the old one.
It is unlikely we typed those words wrong, but I start to worry that rooting the phone will be only option.

Thank you for your input.
We tried that already, but it didn't work. I assume that as the backup was made before any coins were transfered, then we just restored from the backup with no coins. Just as if you were working on your computer and hadn't saved your progress and then tried to reach it afterwards.
But this is just my noneducated guess.

Hello,
sorry to bother with another question on "how to restore a wallet", but Im kind of lost.

I help my friend with mycelium wallet. Actually he set a new wallet on old Android phone, he noticed his 12 keys, he then set a 6-digit pin (which he forgot) and then he received his BTC in this wallet.

We try to figure out how to transfer those BTCs into his new cell phone.
I guess we need to make a backup on the old phone (but this requires a PIN) and install Mycelium on the new phone and reload from backup on the startup.

How to bypass it if we dont have a PIN??
Is rooting the old phone the last option we have?

I would be so grateful for any help.

Thank you