Without, and I also strongly advise against buying a device where you have to tinker with something (instructions are available, but as I said, this is anything but recommended).

A better phone would be the Pocophone X3 Pro. It has 6GB RAM, 128 GB storage, better cameras, a very large battery and costs only 259 francs:

Xiaomi Poco X3 Pro (128 GB, Frost Blue, 6.67 ", Hybrid Dual SIM, 48 Mpx, 4G)