How to Minimize Your Monthly Cell Phone Bill with a Smartphone and a Data Plan

How to lower your cell phone bill with a smartphone and a data planThe Internet has significantly changed the way we communicate. Many people have already eliminated their monthly home phone by using Voice over IP (VoIP). Similarly, the business case for Enterprise VoIP is compelling. It eliminates separate voice and data services and the associated cost of maintenance.

If you have a Smartphone with a data plan, you can minimize your cell phone monthly bill by maximizing VoIP. That is, use low-cost VoIP to make calls as much as possible and only use prepaid minutes as backup.

How much do voice plans cost?

Mobility carriers offer to sell you a cell phone voice plan with 150-200 minutes for $30-35/month. Additional minutes are often charged at 30-40 cents/minute. This means you're spending about 20-30 cents/minute if you use all the minutes precisely. The monthly amount is fixed, whether you use all the minutes or not.

Don't pay for minutes you won't use

A prepaid plan can help you minimize mobile voice cost, which often costs 20-25 cents/minute in a pay-as-you-go setup. You only get charged for the calls you make or receive. Examples of prepaid carriers are President's Choice Mobile (aka PC Telecom), Telus Prepaid, Virgin Mobile, and Fido prepaid. The big wireless companies also usually have a prepaid option as well, but they are typically more costly overall.

How to choose a mobile data plan?

Mobile data packages in Canada cost significantly more than in most other developed and undeveloped nations. For example, Canadian carriers currently charge $10/month for 100MB of data (Telus, PC Telecom), $25/month for 500MB of data (Telus, PC Telecom), and Koodo offers an interesting tiered data plan that charges based on what you use. Note that "unlimited browsing plans" advertised by Speakout Wireless and Petro Canada Mobile are intended for browsing only and do not officially support full internet data which is required to make VoIP calls.

Related: Free Calls and Long Distance With VoIP

This places data costs at around 5-10 cents/MB.

The good news is that the cost of data is slowly dropping, which is another reason not to sign up for a lengthy 3-year contract. 

As of September 2012, for example:

  • Virgin Mobile and Bell offer a flexi tablet plan at $15/250MB and $35/5GB. The plan is for tablets but the SIM card works in normal phones. You also get a normal phone number, but note that if you have to make a cellular voice call, they charge a hefty 40 cents/minute!
  • President's Choice Telecom is offering $5/100MB and $20/500MB on their monthly and prepaid plans until Sept 12. The regular rate is $10/100MB.

How much does VoIP cost per minute over mobile (3G) data?

The following table summarizes the common VoIP codecs supported by VoIP service providers. For each one, we list the approximate nominal bandwidth in MB/min in a two-way VoIP connection, and the associated cost per minute on a typical data plan:

Codec Bit rate Per Minute (two way) Cost per minute
G.711 uncompressed 64 Kbps 1 MB/m 5-10 cents
G.729 8 Kbps 0.5 MB/m 2-5 cents
GSM 13 Kbps 0.5 MB/m 2-5 cents

Clearly, the cost of VoIP is much lower than traditional voice plans. For obvious reasons, this is one of the best kept secrets in the cell phone business. Mobile carriers in Canada often lock subscribers into three-year plans with mandatory voice plans to maximize profit.

How to choose a VoIP provider?

There are many VoIP providers to choose from, from Skype and Vonage to and SavingMentor has written an excellent guide to VoIP services the compares many of the available options head to head.

How do I maximize VoIP usage?

Theoretically, you can save the most by going 100% VoIP. For example, some people have figured out how to use cheap tablet/iPad data only plans ($15-20 for 250-500MB) on regular iPhones and Android cell phones. You can also forego mobile data plans altogether and use wifi exclusively to make your calls.

Related: Cut Or Eliminate Your Home Phone Bill

In practice, however, this does not always give you a reliable voice connection because VoIP requires a good signal with sufficient bandwidth and latency for a high quality voice call. High quality mobile data and wifi are not available everywhere.

Therefore we suggest the following method to help you save money by maximizing VoIP while maintaining the reliability of cellular voice. The principal goals of the following method are:

  • Minimize cost: maximize VoIP usage over cell voice
  • Reliable: call routes to cellular voice if VoIP is not available
  • Easy to use: callers only need to call a single number
  • Portable: your number is fixed even if you change mobile carriers

How do I set it up?

Setting up a VoIP provider for your smartphone is almost the same as setting one up for your home. Here are the steps:

1)  Choose a VoIP service provider that offers a local DID (direct inward dial, telco speak for a phone number). For this method, choose one that offers normal routing to a VoIP client, with the ability to failover to another phone number. Service providers like and Callcentric provide this feature.

2)  Order a phone number (DID). This costs about $1-2 per month at the likes of or Vbuzzer. Incoming minutes are either included or cost up to 1 cent per minute. Outgoing rates range from less than a cent for local calls to a few cents per minute for international calls.

3)  Configure the DID to ring your VoIP client X number of times, say 2-3 times, with failover to your cell number. This is an important step to ensure that if you're not registered with the service provider your call will still be routed to your regular cell phone number. Your phone may not be registered if you're in an area that does not have mobile data connection, or if you're using wifi behind a strict firewall at work. In these cases, the service provider will route your call to your regular cell number, meaning your cell minutes will only be used if VoIP is not an option.

4)  Finally, use a VoIP client to register with the VoIP service provider you signed up with on your smartphone. The following table lists some of the VoIP clients we have tested.

Device VoIP Apps
  • Csipsimple (recommended)
  • Sipdroid with
  • Android Native SIP*
  • Groove IP (Google Voice)
iPhone, iPod Touch, iPad
  • Bria
  • Siphon
  • Talkatone (Google Voice)
  • Dell Voice (Fongo)

* On Android 2.3 and later, SIP (Internet Calling) is supported natively but is restricted to work over WiFi only. This restriction has been removed in many custom ROMs like Cyanogenmod.

Making Calls

Whenever you make a call, use the VoIP line as much as possible. Apps like Csipsimple have an interface that is integrated with your phone's native dialer so it is easy to choose VoIP vs. cellular voice when placing a call. It can also make the appropriate selection automatically depending on whether there is a data connection available.

Receiving Calls

Now, when anyone calls your VoIP DID, it will try to use VoIP first. If VoIP is not available, it will ring your mobile number as backup. This way you can maximize calls on VOIP to minimize cost, and still have regular cell service as backup.

Related: Easy Cheap VoIP With MagicJack

Cheap SMS

If you need to use texting as well, here are some options:

  • Textme and Textplus on iOS and Android provide a free local phone number for texting and voice calling. Note that the voice calling is not as reliable as the recommended apps above.
  • Anveo is a voice-over-IP provider that supports both voice and SMS.
  • Google Voice can send and receive SMS through the Google Voice App.

Additional Tips

  • If you change your mobile carrier and mobile number, just update the failover number on the VoIP account so it will failover to the new phone number
  • If you already have a VoIP service provider for your home, you may consider using the same one so you can set up advanced options like Ring Groups for your home number to ring your smartphone while you're out, IVR/Reception features, and more.
  • On an iPhone/iPod/iPad, use the free app Talkatone to make free calls in North America using Google Talk. This is similar to the phone feature now available in Gmail on your computer.
  • Use a call back service, such as Google Voice, if you have unlimited incoming minutes for your cell phone. Note that Google Voice is not officially available to most Canadians yet and is only available to those who have been previously grandfathered in or to those with a 403 area code.
This is a guest post written by Lee, a regular reader of, who graciously accepted my invitation to write a post on this subject that he is very knowledgeable about. If you are a veteran at saving money and would like the opportunity to write an article and have it published, please contact me and express your interest.

Updated: September 10, 2012

First posted: May 30, 2011

Disclosure: Some links in this article may be affiliate links. We're letting you know because it's the right thing to do. Here’s a more detailed disclosure on how HTS makes money.


youngandthrifty's picture

Cool, thanks! I just downloaded the Talkatone app. i was looking for something I could use with my cell phone and not talk to the computer.


May 01, 2011 @ 11:25 pm
SavingMentor's picture

Glad you like this guest article YT. I try to know my stuff when it comes to VoIP and communications but this guy just blows me out of the water when it comes to in depth knowledge of VoIP. When I saw all the detailed knowledge he had, I immediately offered him the opportunity to write a post for the site! Hoping he will stop by to comment as well.

May 01, 2011 @ 11:34 pm
Sean Conrad
Sean Conrad's picture

Another great article, thanks!

If you are lucky enough to live in a city where WIND mobile is available they have some smoking deals. $45.00/ month unlimited voice and data - and that includes long distance to anywhere in Canada. And it includes all the extras like voicemail, forwarding, conferencing, etc.

I like the idea of setting up my iPod Touch for VOIP though as a backup or a "second phone" and just using my wifi.

May 04, 2011 @ 12:08 pm
Tobias Fünke
Tobias Fünke's picture

Try is I might, I can't get Fido to give me a data plan with my pay-as-you-go on iPhone let alone just the data plan. In fact, it took a lot of hoop-jumping to get them to give me pay-as-you-go for the iPhone.

Ever since I got my iPhone 4, I've been trying to find a carrier that would allow me to get just the data plan with an inactive voice plan. Of course, they know what I'm trying to do so they're not allowing me to get what I want.

May 07, 2011 @ 12:46 pm
SavingMentor's picture

Yes, it can be difficult sometimes because most of these cheap data plans aren't meant for smart phones. Have you, per chance, tried to do it with President's Choice?

One way around it would be to activate the data plan using a regular phone with the SIM card of whatever prepaid provider you want to use. Then simply pop that SIM card out of that phone and into your iPhone once that's been done. You may need to program the phone with the correct setting but unless they are actively blocking certain phones by serial number, I see no reason why it shouldn't work.

May 07, 2011 @ 4:18 pm
Lee's picture

Yes, a prepaid account with data add-on is one option as SavingMentor mentioned. Some options are:

PC Mobile: 20 cents/min + $7/month unlimited browsing (although last week they changed it to 25 cents/min voice + $10/month for 100MB data).

Petro-Canada and Speakout Wireless: prepaid voice + $10/month unlimited browsing.

telus prepaid voice and $20 for 250MB data /month.

Others have had success getting the Bell/Rogers iPad data only plan SIM to work in iPhone.

May 07, 2011 @ 11:38 pm
SavingMentor's picture

Thanks for the additional info Lee. Man did President's Choice ever give their website a major overhaul! Actually looks like a decent marketing site now :)

One correction, the airtime cost for them is still $0.20/min (just checked), but you are correct in that they have instituted a new 100MB cap on the data. It is $0.15/mb after that which works out to be $15 for every additional $100MB of data.

May 08, 2011 @ 10:42 am
Gerald's picture

How would you manage SMS when using VoIP? It seems SMS is not handled easily or commonly by VoIP

January 09, 2012 @ 10:10 am
Lee's picture

Normally VoIP DID's are considered to be landline numbers. They do not support SMS.

Google Voice supports SMS. Skype does its own "chat", not sure how it handles SMS though.

Hope this helps.

January 09, 2012 @ 3:25 pm
Joe r
Joe r's picture

Check out Dell Voice. I just signed up a few days ago using my iPod touch. The service is really neat. You even get a free phone number. For Canadians only.

March 20, 2012 @ 11:21 pm
SavingMentor's picture

Thanks Joe! It looks like Dell Voice is powered by Fongo which is now what powers as well. It seems they are all linked.

March 21, 2012 @ 12:52 pm
bonbonbon's picture


" How would you manage SMS when using VoIP? It seems SMS is not handled easily or commonly by VoIP"

Android Market or now called Play Store has TextMe app you can also get from their website

April 18, 2012 @ 8:12 pm
Steven J Fromm's picture

Wow, these are some pretty good ideas some of which I did not know about. I will be checking them out. Thanks for the information.

March 24, 2013 @ 1:53 pm

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