Critical Network/Calling Issue on Galaxy S26 Ultra – Beta Software

[SuRyApAgArWaL]

Dear Samsung Support Team,

I am currently using the Galaxy S26 Ultra on the Beta software, and I am facing a critical network-related issue that is affecting basic phone functionality.

The issue is as follows:

• After some time, my phone becomes unreachable to other people. When someone tries to call me, the call does not reach my phone.
• The mobile network appears to be connected and internet/data continues to work, but incoming/outgoing calls and SMS get stuck.
• The phone essentially goes into a state where the network appears active for data but calling and SMS services become unresponsive.
• The only temporary workaround is to turn Airplane Mode ON and then OFF.
• After toggling Airplane Mode, calling and SMS start working again, but only for approximately 1 hour, after which the same issue returns.
• This keeps repeating and requires me to manually toggle Airplane Mode to restore calling functionality.

This is a serious issue, because a phone being unreachable for calls and SMS without any obvious network-disconnection indication can result in missed calls, OTPs, and other important communications.

Please investigate this as a Beta software/network stack issue, particularly the handling of the modem/IMS/VoLTE services while the device is in this state.

I request Samsung to:

1. Investigate and identify the root cause.
2. Provide a software update/fix at the earliest.
3. Confirm whether this is a known issue in the current Beta build.
4. Advise whether any diagnostic logs or bug reports are required from my device.

Device: Samsung Galaxy S26 Ultra
Software: Beta version
Issue: Mobile data works, but calls and SMS become completely stuck; Airplane Mode toggle temporarily restores functionality.

This issue is significantly affecting the core functionality of the device, so I request that it be treated as a high-priority Beta bug.

Regards,
Surya Agarwal

[fal786]

Same issue

[amitpambhar]

Same issue

[satishrjangid]

Same issue with my handset last beta 6 update

[fal786]

Samsung is requested to fix this issue immediately.Fed up with is issue.

[rc_rohit19]

Same Issue. 😭😭

[Jyotirmay_Dave]

Same problem

[Lalvikas]

Same issue with my s26

[SKCVLOGS]

Same issue