Hello ! Currently, we have customers who use about 5,000 devices. In the case of ios26, the phone number is not acquired overall, and 18.x, 17.x, and 16.x are all acquired in half and not acquired in half. https://developer.apple.com/documentation/devicemanagement/deviceinformationcommand/command-data.dictionary/queries-data.dictionary It seems that it is the right behavior not to acquire it on the specification sheet. However, I wonder when it became impossible to acquire. (There are devices that can be acquired and devices that can't be acquired in the same os version.) Will the devices that are being acquired be blocked someday? When it was developed in 2019, it was in a state that could be acquired in full. I would also like to ask if there is an alternative way to get your phone number. Thank you.

Hello Apple Developer Community, We’re building an MDM product (SaaS, multi-tenant). I’d like clarification on the APNs MDM push certificate usage model for service providers (MSPs). Question: Is it acceptable for an MDM vendor to use a single APNs MDM push certificate owned by the vendor to manage devices for multiple, independent customer organizations? Or is it required/recommended that each customer (company) must obtain and use its own APNs MDM push certificate (issued under the customer’s Apple ID) for their tenant? Why we’re asking: We understand that many guides show the process where each customer logs into the Apple Push Certificates Portal with their own Apple ID, uploads a CSR provided by the MDM, and then renews yearly. Practically, for a small team and early-stage deployments, using one vendor-owned certificate across multiple tenants would be simpler. We want to ensure we’re not violating any policy, terms, or technical requirements (e.g., certificate ownership, topic binding, device token isolation, audit/compliance expectations). What we need from Apple (or authoritative sources): An official Apple document or policy that clearly states whether per-customer certificates are mandatory vs strongly recommended for MSP/multi-tenant MDMs. If per-customer is mandatory, please point to the relevant clause or section. If a vendor uses a single certificate for multiple organizations, what risks or consequences should we expect (e.g., compliance issues, supportability, potential program violations, off-boarding problems, etc.)? Context: We’re sending only MDM wake notifications (standard MDM flow). We understand certificates expire yearly and must be renewed with the same Apple ID to avoid device re-enrollment. We want to follow Apple’s best practices while keeping early operations manageable. Any guidance, links to official documentation, or clarification from Apple engineers/moderators would be greatly appreciated. Thank you!

I was importing the app's information based on the document below. https://developer.apple.com/documentation/devicemanagement/getting-app-and-book-information-legacy However, I have failed to get the information of the custom app from a few days ago. The result is empty. This is a request with an empty result. https://uclient-api.itunes.apple.com/WebObjects/MZStorePlatform.woa/wa/lookup?version=2&p=mdm-lockup&caller=MDM&platform=volumestore&cc=jp&id=1556411142 This is the request with results. https://uclient-api.itunes.apple.com/WebObjects/MZStorePlatform.woa/wa/lookup?version=2&p=mdm-lockup&caller=MDM&platform=volumestore&cc=jp&id=1202716089 In ABM/ASM, you can see my assets and both the quantity in use and the quantity available will be searched normally. Is there anything else I can check? Please reply. Thank you.

I'm looking at the Apple official document below and getting the app's information. https://developer.apple.com/documentation/devicemanagement/getting-app-and-book-information-legacy However, I couldn't get the custom app's information for a few days ago. The result item is empty. This is a URL that is normally viewed. https://uclient-api.itunes.apple.com/WebObjects/MZStorePlatform.woa/wa/lookup?version=2&p=mdm-lockup&caller=MDM&platform=volumestore&cc=jp&id=1202716089 This is the URL that gives an empty response to the result. https://uclient-api.itunes.apple.com/WebObjects/MZStorePlatform.woa/wa/lookup?version=2&p=mdm-lockup&caller=MDM&platform=volumestore&cc=jp&id=1556411142 In ABM/ASM, the number of applications used and the number of available applications are all viewed normally. Is there anything else I can check? Please reply. Thank you.

If you try to update information on an enroled Apple device, the request command is successful, but you cannot receive any information from the device. RequestType = "DeviceInformation" RequestType = "InstalledApplicationList" mdm_task_uuids:['bb674e0a-e7ce-4df9-ad7a-ebefb67d852e', '5d3e095d-7be4-4f6e-b0b7-2d57208be4b5'] udid:00008110-0002309A0A6A401E The device is operating normally. Policy profiles are also installed well. Which part should I check more? Please reply. Thank you.

The request for command type 'InstalledApplicationList' and 'DeviceInformation' is successful, but there is no response from the device. device udid:00008110-0002309A0A6A401E mdm_task_uuids:['d3faa00d-5be9-48d7-a3ef-4ae57fd9e7ff', 'e396c93e-7c1c-455f-a1ad-33df4836626a'] Currently, the device is enrolled with our MDM server normally, and the installation of the policy profile also succeeds successfully. Which part should check more? Please reply. Thank you

Hello Forum, If I send the device the "DeviceInformationCommand.Command.RequestType= DeviceInformation" command and "InstalledApplicationListCommand.Command.RequestType = InstalledApplicationList" command , it can be sent successfully, but I don't get a response from the device. https://developer.apple.com/documentation/devicemanagement/get_device_information ------------- our log ---------------------- general.log.5:[2024/03/27 13:23:30] (172.31.54.87) I #TaskUpdateInformationHandler - did:14379, udid:63a6d7edc9f1128808aaee49d80e9539b5fd9cdd, mdm_task_uuids:['0aa5f838-1891-4a9b-b4fd-9d7c0aa365d3', '3f401ea8-be87-499b-a4be-fea2b1dab379'], result:ok, cid:117 general.log.5:[2024/03/28 03:06:34] (172.31.76.98) I #TaskUpdateInformationHandler - did:14379, udid:63a6d7edc9f1128808aaee49d80e9539b5fd9cdd, mdm_task_uuids:['c46b8523-40cd-4c7e-8a5d-0e49c9d26106', '8a99b664-df27-4bc9-8f41-fe39e3a7f3bc'], result:ok, cid:117 It is transmitted successfully to the Apple MDM server, but there is no response from the device. However, policy distribution such as PushSetting works normally. I would like to get some document or help that I can refer to. Thank you.