Excellent purchase! The product arrived with 91% battery health and 278 charging cycles. It doesn’t have a single scratch not even one it’s literally like brand new, except for the natural battery wear. For €689, it’s absolutely worth it. It came in a nonoriginal box, but it included a charger.

The phone is flawless, the staff at I-Up are very helpful, I received a Grade A phone without any scratches, and since the 512GB version was not available at the time of purchase, they gave me the next version for free! As for the phone, what can I say, upgrading from iPhone 12 Pro Max to 15 Pro Max is like night and day. And at this price, get it yesterday!

Externally just fine
The replaced battery is at 79% even though it says 100%
That's the negative
Even though I was informed that it has been replaced

The significantly cheaper price of this product from this store is justified because, although it was literally in brand new condition, instead of the original packaging, they had already placed a protective glass and included an authentic Apple charging/data cable.

Of course, it's a good phone, but the pro fusion filter they put on selfies is terrible. It makes everything gray. Until this is fixed, I won't raise the rating.
(Unfortunately, it can't be corrected in the settings.)

I had the 14 pro max and I didn't particularly like it, it was very heavy and the battery wasn't the best. I sold it within 4 months of buying it and switched to android. However, I eventually realized that the quality of Apple is unmatched and I happily switched back. If you ever buy an iPhone.... You won't easily switch back to android. Android is also very nice, but it still lags several times and needs improvement. As a device, it is amazing and the type c solves the problem

The quality in all its greatness camera processor screen battery experience whole, after a month of use with 2 software updates in between I have to say only the best, especially the ability to record video in prores puts even mirrorless cameras down

For speed and photos, I don't need to say anything... However, I have to say about its battery that it's the best. Coming from the S23 Ultra, I see a huge difference. The battery with full usage on the phone from around 8.00 am easily lasts the whole day and I'm left with 50% until around 11.00 pm. With Bluetooth on all day, camera usage for photos, about 1 hour of gaming, and regular use of wireless headphones for calls and some music, while with the S23 Ultra I had to charge it in the car during the day towards the afternoon.

It's worth the purchase if you have the money, of course, as it is expensive like all the corresponding competitors' phones nowadays.

I won't dwell on how fast it is or on the very nice photos it takes, coming from the Samsung s21 plus, which I changed solely because I was tired of the lag with the Exynos processor.
What I want to focus on is what bothered me about a 1.5k phone, which is the hollowness I hear every time I type something on the screen. At least the s21 was more solid in this particular aspect. From what I've researched, the issue seems to appear with the iPhone 12, but it's probably a minor flaw compared to its other features.
If someone wants to investigate further, they can search by typing "iPhone screen sound hollow."