Talk:Roaming SIM

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Does anybody know which of the many roaming sims available on the market is better? For instance, united-mobile.com - and others - which one offers the best number of countries with free incoming calls?

Callback Technology edit

Latest comment: 8 years ago1 comment1 person in discussion

Please would someone knowledgeable add information as to whether the "callback technology" function incurs a charge to the called number ? This is not clear in the article. Many thanks. Darkman101 (talk) 04:13, 12 November 2015 (UTC)Reply

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