We had the same problem in our project. The conclusion was that it depends on the SIM card. What happened to us: Galaxy S with AT&T SIM card: can read phone number, Settings shows number Same Galaxy with an European SIM card: cannot read the number and “unknown” in Settings (cell phone was perfectly functional, … Read more
At the risk of getting negative marks, I want to suggest that the highest ranking solution (currently the first response) violates the latest SDK Agreement as of Nov 5, 2009. Our application was just rejected for using it. Here’s the response from Apple: “For security reasons, iPhone OS restricts an application (including its preferences and … Read more
I suggest to buy yourself this book: http://www.amazon.ca/Regular-Expressions-Cookbook-Jan-Goyvaerts/dp/1449319432/ref=sr_1_1?ie=UTF8&qid=1444846344&sr=8-1&keywords=regular+expression+cookbook if you are struggling for such a basic regex (which can be found pretty much everywhere on the net). It’s a cookbook, meaning that the solutions can be use directly as they are in the book. From page 249: ^\(?([0-9]{3})\)?[- ]?([0-9]{3})[- ]?([0-9]{4}) You have three capture groups: … Read more
I’d advise against stuff like this since there’s almost always a country where the phone numbers won’t match the validation, but here is the regex that matches your request ^\+?[0-9]{8,15}$