First of all, Apple's after-sales support phone number is 400-668-8435. You can call this number for help if you have any problems.
Secondly, this is the phone number of Apple's online store: 800-275-2273. If you have any shopping questions, you can call this number for consultation.
In addition, the online time of Apple's telephone customer service is from 9 am to 9 pm from Monday to Friday.
Please note the following points:
You need to pay for local calls and domestic calls. The toll-free phone number is only applicable to landlines. There may be a charge for dialing by mobile phone. You may not be able to dial this number through some mobile network providers. Please contact your network provider for more information.