The Apple XR series uses Intel’s signal baseband, not Qualcomm baseband. Due to Intel's immature technology, the signal of the XR series is not very good.
The reason why Apple does not use Qualcomm baseband, but Intel’s signal baseband. This is because during the development of Apple .
Qualcomm does not make mobile phones, but its chips are indeed the favorite of countless mobile phone manufacturers, and its chips have also become a weapon for Android mobile phone manufacturers to attack Apple.
Qualcomm is also making basebands for mobile phones, which is the key to the signal quality of a mobile phone. Although Apple did not use Qualcomm's CPU chips before, it did use Qualcomm's baseband. But now Apple has decided to completely break with Qualcomm, no longer use the baseband provided by it, and instead cooperate with Intel.
Extended information
Disputes between Apple and Qualcomm:
In the early morning of April 17, 2019, Beijing time, Qualcomm and Apple simultaneously announced on their respective official websites, The parties agree to waive all litigation worldwide. In January 2017, Apple filed a $1 billion lawsuit against Qualcomm, accusing the chipmaker of overcharging for its chip products. Qualcomm then launched a countersuit.
Apple agrees to pay patent licensing fees to Qualcomm. The two companies reached a six-year patent licensing agreement, effective from the 1st of this month, including an option to extend for two years. In addition, the two parties also reached a multi-year chip purchase agreement.
There is no doubt that this is an overall victory for Qualcomm. Because this settlement plan was originally the outcome Qualcomm wanted, and it was also the situation before Apple launched a lawsuit two years ago. After two years of fighting, Apple did not take any advantage. It still accepted the original cooperative relationship with Qualcomm and continued to purchase baseband chips from Qualcomm.
Because of this, the impact of the settlement plan on the stock prices of the two companies is also completely different. After the news was announced, Qualcomm's stock price immediately soared by more than 20%, setting the largest single-day increase in two decades, and its market value soared by more than $16 billion. Apple's stock price showed almost no fluctuations, and fell 0.1% after the market closed. Because this also means that Apple’s efforts to challenge Qualcomm’s industry rules have completely failed.
Another related news is that Intel announced that it will abandon its bottlenecked 5G baseband chip business. Now that Apple has reached a settlement with Qualcomm and will continue to purchase Qualcomm chips in the future, Intel's continued investment in 5G baseband chip research and development has lost its meaning. Intel's stagnation in the development of 5G baseband chips is the key reason that forced Apple to surrender to Qualcomm.
Baidu Encyclopedia - Apple Qualcomm case