I have a new S10 (7 days old). It is a replacement for a 3.5 year old S7, and it is very nice.
I have just one gripe. I installed AccuBattery on day 1. This is telling me from day 1 my battery health was 88%. After 7 days it is now telling me 87%. AccuBattery rates the design capacity at 3300mah (minimum capacity from new) and not the advertised 3400mah. The current estimated capacity is 2877mah (which is 87% of 3300mah).
That is pretty disappointing. My 3.5 year old S7 has an estimated 80% battery health. And that phone has led a full life.
I wondering if this is a warranty issue.
The phone is supposed to be brand new. It looked brand new when I received it. All perfectly boxed and sealed. The battery charge was about 50% when unboxed.
I did an IMEI check and that says manufactured in may-2019 which makes perfect sense. IMEI check also says carrier is EE, which is how the phone was advertised. I think the phone is unlocked, but I am on EE anyway. It looks like it is old unsold EE stock that has been moved on to a reseller. One of the main reasons for buying is that it is the last galaxy S phone with a headphone jack.
I could go back to the seller and ask for a replacement, but wanted to hear some opinions first. It is a very nice phone, and there are not that many in new condition still around.