My iPhone 7 stopped taking voicemails. I dialed it from a different number and got the automated message, "voice mailbox is full." I contacted my carrier, Credo Mobile, and they explained that voicemail storage occurs on the iPhone, not in my carrier account.

On the iPhone 7, I went into Settings, General, iPhone Storage, Phone, and saw that Voicemails took up only 12.3MB. (This was after I had deleted some voicemails and was again able to leave a message.)

Is there, then, some constant, fixed, number of bytes that my phone can store as voicemail? Or is it a fixed number of messages? Or if I reduce the amount stored by some other app---say, Voice Memos, which today uses a whopping 14.86GB---will there be more room for voicemails?

These are not several questions, it is a single question with several possible suggested answers.

(Because of spam phone calls and robocalls, there is a steady drizzle of unwanted voicemails into my iPhone 7 so that even if no one calls me that I care about, the voice mailbox will get full.)

Note that one response to Can I devote more room to my voicemails? states, in the context of Verizon,

Voicemail is handled by the carrier. The size of your mailbox depends on the plan & features you have with Verizon, not on the free space available on your phone.

But Credo Mobile customer service---a live human being speaking with me---unequivocally stated the opposite for their service. In addition, when I logged into my account on Credo Mobile, https://www.credomobile.com/customer/account/login, I found no option to set or change the amount of voicemail storage. Also, there are no voicemails in my online account. For instance, I cannot go online and listen to voicemails. There is no list of voicemails online.

  • 2
    I think your support human was incorrect.
    – Ɱark Ƭ
    Commented Feb 8, 2021 at 22:44
  • @ⱮarkƬ what is the documentation or evidence for this? Do you have Credo Mobile? Commented Feb 8, 2021 at 23:21
  • If you turn your phone off, are you able to leave voicemail for yourself? For what it's worth, I know my voicemails are stored AT&T and Verizon side, and I also do not have the option to listen to voicemails online, or change the size of my voicemail box. I think it is more likely that the Credo mobile support person is simply confused, because your iPhone can store copies of voicemails - but that does not make it the mechanism by which voicemail is received.
    – negacao
    Commented Feb 9, 2021 at 1:19
  • 1
    Credo is an MVNO that re-sells Verizon. Verizon stores voicemail on the network. The phone doesn't have anything to do with it. Commented Feb 9, 2021 at 3:26
  • Call your own phone, press # while the announcement is playing, enter your voicemail password. Commented Feb 9, 2021 at 3:39

1 Answer 1


Whoever you spoke to one the phone was wrong, your carrier limits the number of voice mails you can have stored.

  • 1
    Voice mail storage is at the carrier. This is why you can retrive them without the phone. Commented Feb 9, 2021 at 3:24

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