Another Apple ID on my old phone
Hi, I have an old iPhone 8 plus which I haven't used for 6 months. i erased all my data, and kept in in storage. Now as I was going to give it to my son, there is another Apple ID which I am not familiar with. I am from the Philippines, and now the setting in the iPhone says it is from Germany. There is another Apple ID on this phone, and I have really no idea how it got there. I have had this iPhone 8 plus since 2018, and I bought it brand new, but I have been using an iPhone 12 Pro Max since last year. I have occasionally used this as my second phone, but I have since used an Android device as a second phone. Can someone help me here. Thank you