Cannot sync/transfer all data to new iPhone
About a month ago I went to my local service provider’s store to get a new iPhone. Had all sorts of issues (they initially gave me - without ever asking what storage capacity I wanted - a phone that was less than my current phone at the time, so of course nothing would sync then). Ended up with an iPhone 15 Pro. I did the quick/smart setup to try to set up the new phone and it transferred effectively nothing over. The store employee told me I have to keep going into Settings > iCloud and manually syncing apps through there repeatedly to get everything to transfer. I’ve tried backing up my old phone to iCloud and the time expected always keeps increasing (was up to 42 hours at one point) until eventually it just stops attempting to back up. I have an old (2015) MacBook Pro that does not have storage capacity to back my phone up manually, so that’s not a possibility. I went to the next nearest store of the same service provider and they told me they couldn’t transfer my data between phones because “they share their internet with all the nearby businesses and it’s so slow that it wouldn’t work”.
It has slowly (and seemingly on its own) transferred some of my photos (some of the oldest, and some of the most recent) and text conversations on its own, but that’s it.
What are my options?
iPhone 15 Pro