I lost my phone days ago and now I got a used phone, the problem is this phone is rooted, I hope this doesn't carry any danger to crypto related security? Either wallets or stuff? I am careful not to import my recovery seed on the phone first, not before having a answer, I've also reformatted the phone through recovery mode but root is still present. Any Danger?.
What phone model are you using?
I would not used rooted phones for anything serious, but maybe you could install something like Divest OS or Lineage OS if you want more privacy with less bloatware.
Best thing would be to use any google pixel phone (even used) and you can easily install Graphene OS in no more than ten minutes, following simple instructions.
Than you should add good unique password and use only open source bitcoin wallets , but I would only do this for pocket money and small amount of coins.
More coins should be kept offline on cold storage of your choice.