This is just it, without infringing on Qualcomm's patents, Apple will NEVER EVER make a competitive modem for the current mobile communications transmission methods because Qualcomm hold the patents that are pertinent in the chip design of a modem. MR had done a number of articles on the subject. There one specific one where MR went into specifics about the modem patents and why the ones Apple want ruled invalid bother Apple so much. 2G/3G/4G/5G are all different mobile communication protocols but they all have to do the same one thing and that is they have to ride piggy back on the core modem technology that allows the bit's of zero's and one's to communicate with one another. As the MR article pointed out, there are different ways this core technology can be achieved. The problem for Apple is that Qualcomm were the first ones to design the chip that allowed it to be extremely efficient, less power hungry and more robust than any later chip designs put forward by other modem manufacturers...........
If Apple can make a competitive modem, awesome. Good for all involved if they push Qualcomm harder too. I really doubt they are going to sell to the broader market, but if they can make a modem that performs well QCOM will need to keep up.
Intel had a very robust core modem design but it was only good for larger device applications which is why when you open up a laptop and look at the modem cards or the wifi cards, they are made by intel and have intel modem chips on them. Motorola had a very good robust core modem design but it was only good for land line communications. You will find many Motorola chips in fax machines. Then came the introduction of the mobile phone. All the major mobile phone manufacturers scrambled to be no.1, Motorola, Nokia, NEC, Panasonic. Each one using either their own or a 3rd party modem chip. NEC and Motorola were making their own modem chips, Texas Instruments, Qualcomm and Intel was making them for mobile phone manufacturers. The old analogue frequencies was being used. Then came the game changer, digital in the form of PCN and GSM. Apple fan's heap god like praise on Steve Job's for the visionary he was but yet no one gives the owners of Qualcomm and praise for the visionary they had on where mobile phone communications would take the world. They saw it's potential and thus designed a core modem design that would the see the test of time.
Qualcomm is vilified by Apple fans because they have the audacity to not let Apple use Qualcomm's patents for free. It would not surprise me that the incident at Xerox PARC led many budding designers to give serious thought how they wanted to protect their designs because at Xerox, it is well known in computer history that both Steve Jobs and Bill Gates saw the Xerox Alto computer in action, a computer that used windows and a mouse. Both Steve and Bill took what they saw and built their own versions, giving nothing back to Xerox, effectively stealing their idea.
There are a tremendous amount of bitter Apple fans when it comes to Qualcomm. The founders of Qualcomm saw the potential of mobile communications and put huge amount of effort into designing the best modem for mobile communications they can and they have. Now the company is vilified constantly because they will not let Apple get it's own way.