That’s because, according to the rumor, the thickness-obsessed designers at Apple have a custom antenna — they bought Intel’s tech last year for a reason — that makes the 5G iPhone sleeker than is possible if the company relies on Qualcomm’s.

Plus, even though Qualcomm and Apple have squashed their beef over royalties, the claim is that Apple would prefer to use as few of the other company’s components as possible to keep from paying them more. That the phone will use a Snapdragon X55 modem for 5G — just like Samsung’s models — is apparently a given, but the choice between the two options is reportedly in play for at least a few more weeks.

That’s because eventually Apple needs to make a choice and begin production of the devices — not to mention accessories like cases — before they’re introduced and go on sale in the fall. The additional wrinkle, of course, is the complexity of 5G tech that’s still relatively new, and Apple’s struggles using its own antenna design in the iPhone 4.