A new generation of iPhone XS Max, iPhone XS should have no hardware “draw”, the hardware is surprisingly unified, but it is planted in the communication signal, as the core function of the mobile phone, the iPhone actually did 11 years still not doing well? As a matter of course, we blame Apple for giving up the Qualcomm baseband in a partial and partial manner. Instead, we chose the Intel XMM7560 baseband that has not been widely used. The signal difference has become an inevitable shadow of the new generation of iPhone XS mobile phones. But is it really right to give the pot to Intel? The first test of the iPhone signal door wiwavelength pointed out that this pot Intel can not be fully backed up, because in the previous generation iPhone X, Qualcomm baseband version and Intel baseband version performance is very consistent, iPhone XR signal performance is also better.
The iPhone signal difference seems to have become the law. After all, the iPhone 4 has had a “death of death” rollover, and everyone seems to be more calm about the appearance of the signal door. Originally speaking, Apple has not taken care of the 4×4 MIMO multi-antenna technology. In the top and bottom of the fuselage, an injection molded antenna has been added. In theory, the iPhone XS series should have better Communication RF performance, but backfired. Wiwavelength found that the iPhone XS Max and iPhone XS performances are “amazingly similar” by testing the mainstream communication bands.
The EIRP effective omnidirectional radiation power is not as good as the previous generation iPhone 8, and some bands are even worse than the iPhone X. So many people think that this pot has the Intel baseband back. But the subsequent wiwavelength post indicates that the baseband is not the only problem, which may be related to Apple’s antenna design, because the iPhone X mixes Qualcomm and Intel baseband, the performance of the two is not much different. Poor signal is not necessarily the baseband of the pot (small series insert a sentence, in fact, the iPhone X actual signal performance is not good, iPhone 6 Plus can send WeChat smoothly, iPhone X shows that it is connecting).
The previous disassembly also showed that last year’s iPhone X had already used a multi-layer Liquid Crystal Polymer antenna. This antenna design is extremely complicated and difficult to manufacture, but the dielectric loss and conductor loss are smaller, and it is flexible and sealed. The signal difference may also be related to the immature design. As a mobile phone, the most important thing is the communication function.
No communication ability can only count as an MP4. It relies on more than one communication chip to solve it. Each mobile phone has a different design. According to its design, the corresponding communication antenna design is required. The antenna design is troublesome. A little change can cause the communication index to be seriously degraded, and the network access standard cannot be achieved. Antenna design has always been a big problem. For the iPhone XR that has not yet been released, the wiwavelength test found that the effective omnidirectional radiated power of EIRP is actually better than the iPhone XS Max and iPhone XS in the same period, eh? It’s hard to say who this pot is thrown to, and Apple is a big part of it.