As shown in the screenshot below, on my Samsung Galaxy SIII, when I go to Phone -> Call Settings, almost everything is disabled/grayed out. I have a SIM card inside my phone but have not topped up my mobile phone subscription this month. I wonder whether that is the reason why these features are disabled, or whether the reason is that my network provider doesn't support them (after all I am still able to receive incoming calls and SMSs). Is this the case?

I would like to use features such as:

  • placing a call on hold, retrieving a held call, and dialling second (or other) calls
  • make multipary/conference calls by merging calls
  • set call diverting (including diverting calls to the voicemail server)
  • set call barring
  • set call waiting
  • set call forwarding
  • set fixed dialling numbers (FDNs)

I wonder which of these features require support for these features from the network operator. I also would like to know whether, and if not then which of these, features are nowadays provided free of charge with a subscription plan from the network operator, and which features normally would not be included and cost extra. Receiving phone calls and SMS messages does not require the account associated with the SIM card to be topped-up (hence is totally free of charge). I know this could vary from network operator to network operator, but due to network operator competitiveness, I would expect most network operator to provide more or less the same features for free as others, and charge for features in case the other operators also do.


Call Settings


I've topped up my phone with my pay-as-you-go plan and as a result all of the entries in the above screenshot have become enabled.


Just for the record, I've contacted my network operator. The monthly 10€ pay-as-you-go plan I'm subscribed to happens to include 400 phone hours within the same country, 400 SMS to phone numbers within the same country, 1GB fast Internet followed by unlimited slow Internet. However calls abroad as well as calls to the provider's answering machine service are charged separately/extra. Also, while Caller ID and Call Forwarding/Diverting services are free of charge, Call Waiting will soon incur charges with my provider. I guess other service providers would offer similar service and features at roughly the same price. Regards.

closed as off-topic by Matthew Read Oct 13 '15 at 15:37

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions which are Android-independent, such as "Does Carrier X have prepaid plans?", are off-topic. Consider taking advantage of other resources that may be appropriate for your question." – Matthew Read
If this question can be reworded to fit the rules in the help center, please edit the question.

  • 2
    I'd first ask the network operator. Most of what you've listed are "service features" the operator needs to explicitly support – so it might well be that's why they're disabled in call settings (they might be detected as "being absent"). – Izzy Dec 11 '14 at 16:01
  • Thank you for your answer. Besides my particular network operator, I was also interested in knowing which of these services are included on average by most network operators with the most common basic pay-as-you go plans and which ones among the services I listed tend to cost extra nowadays. Thanks. – John Sonderson Dec 11 '14 at 22:12
  • 1
    That's no question fitting this site (off-topic for being "Android independent"). We don't cover "all about cell phones" here ;) – Izzy Dec 11 '14 at 22:28
  • Sorry, I thought those features would have had to have support from the Android OS to function properly, plus the screenshot I posted is Android specific. Plus, I couldn't find a more suitable site for this post. Sorry for the post. – John Sonderson Dec 11 '14 at 22:33
  • 1
    You've got me wrong: Your question is fine. But what you've asked in your last comment ("which of these services are included on average by most network operators") would be off-topic here. – Izzy Dec 11 '14 at 22:34

The reason for this is because airplane mode is on.

Turn off airplane mode, and all those settings will be available.

Not the answer you're looking for? Browse other questions tagged or ask your own question.