1. 2014. People for Whom One Cellphone Isn't Enough. https://www.wsj.com/articles/people-who-use-two-cellphones-1396393393. 2014. People for Whom One Cellphone Isn't Enough. https://www.wsj.com/articles/people-who-use-two-cellphones-1396393393.
2. 2015. Doing the Two-Smartphone Shuffle. https://geekdad.com/2015/02/two-smartphone-shuffle/. 2015. Doing the Two-Smartphone Shuffle. https://geekdad.com/2015/02/two-smartphone-shuffle/.
3. 2015. How Often Does the Average American Replace His or Her Smartphone? https://www.fool.com/investing/general/2015/07/15/how-often-does-the-average-american-replace-his-or.aspx. 2015. How Often Does the Average American Replace His or Her Smartphone? https://www.fool.com/investing/general/2015/07/15/how-often-does-the-average-american-replace-his-or.aspx.
4. 2016. 3 Reasons Why You Should Own A Second Cell Phone. https://www.forbes.com/sites/forbesmarketplace/2016/03/17/3-reasons-why-you-should-own-a-second-cell-phone/. 2016. 3 Reasons Why You Should Own A Second Cell Phone. https://www.forbes.com/sites/forbesmarketplace/2016/03/17/3-reasons-why-you-should-own-a-second-cell-phone/.
5. 2017. 8 Frugal Reasons to Have Two Phones. https://www.thefrugalgene.com/frugal-phones/. 2017. 8 Frugal Reasons to Have Two Phones. https://www.thefrugalgene.com/frugal-phones/.