What Chen Xiaobei meant by upgrading his phone was not that he was going to do anything to the phone physically but he was going to transfer the function of Red Envelope Group to his Dami 17.
Actually, since he learned that his new phone could be used on earth, he had been itching to perform the upgrade.
Right now was just the right time and place to do it.
The process was actually very simple.
One time, Liu Xuanxin had slapped him so hard he fell into the water. He really freaked out because his phone was wet. But Old Wang explained (refer to chapter 738) that there was a small Spatial Formation in his phone, it was also his first treasure chest.
Chen Xiaobei transferred the Spatial Formation into the Wrath Bolt ring, which became today's Infinite Space Ring. Not only did the ring served as a treasure chest, but it was also a hotspot for Three Realms Intranet.