| CPC H04M 15/7556 (2013.01) [H04M 1/27457 (2020.01); H04M 3/42382 (2013.01); H04M 2203/6081 (2013.01)] | 20 Claims | 

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               1. A method for managing phone number-based user accounts, the method comprising, by a server computing device: 
            receiving a request to create a user account based on a phone number; 
                authenticating an ownership of the phone number; 
                creating hidden and visible contact addresses based on the phone number, wherein the hidden contact address permits access to a first subset of services that omits at least a second subset of services that are otherwise accessible using the visible contact address; 
                assigning the hidden contact address to the user account and a first client computing device to permit the first client computing device to access the first subset of services; and 
                assigning the visible contact address to the user account and a second client computing device to permit the second client computing device to access the first and second subsets of services. 
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