I have spent over two solid days attempting to address this issue, to no avail. I realize any issue involving telephone performance can be linked to a wide range of sources: user error, voice mail capacity, phone hardware and software, network connectivity, network software, and network carriers. However, after analyzing various permutations of variables associated with iPhone visual voicemail, I am coming to a conclusion or hypothesis that it is an iOS software issue associated with the iPhone 5s. This problem did not occur for me until the iOS was updated to 8.1.2. I currently must either use the manual method to check for voice messages via my network carrier or power down and power up the iPhone. If I check my voice mail by directly calling through Sprint protocol (holding down thenumber 1) and then also receive a visual voice mail after I listen to the message via Sprint.
I have gone through all of the 8 steps delineated at Get help with visual voicemail on your iPhone - Apple Support. They do not solve the problem.
I can indicate for everyone else who has encountered this problem with what I have thus far attempted (below).
I have worked with two online Apple support technicians, two Sprint network technicians, an Apple store technician, and a Sprint store network technician. What is very puzzling is my wife has an iPhone 5c with iOS 8.1.3 and the same network connectivity (e.g. Sprint network connectivity) and she does not encounter this problem. Please note that this problem exists outside of the geographic area I live. I recently went out of state to ski and the problem existed there as well.
Through online Apple support and also visiting an Apple store, I have
- wiped and reinstalled the latest iOS three times on the old iPhone 5s;
- reset network settings
- deleted old voice mail to ensure I have sufficient storage capacity
- replaced the hardware (iPhone) with a new phone at the Apple store and tested the new phone first without downloading from the iCloud my configurations and data and then testing after downloading data and personal configurations. At the store we also cleared network settings and reset network settings.
- updated the iOS on the new hardware.
No success, I receive notifications of phone calls but new voice mail messages do not appear unless the device is powered down and then powered up.
I then worked with two online technicians from my network provider to determine if the issue is related to network provider software or connectivity. In the context of Sprint network protocol, I updated network settings (##update#) and also cleared network settings (##clear#). No success. I was then referred to a Sprint technician at a local Sprint location. The technician concluded that it is an iOS issue. He alleges that iPhone 5s and iPhone 6 software to not automatically download visual voicemail. I find this assessment to be dubious. Through controlling various variables, settings, and conditions, the only thing I see different if I were to compare my situation with my wife's situation is that she has a 5c and a unique voicemail box / account.