Mobile roaming is a service that allows mobile users to continue to use their mobile phones or other mobile devices to make and receive voice calls and text messages, browse the internet, and send and receive emails while visiting another geography where a home network connection does not exist. However, issues may arise for scenarios in which a visited network may not have a roaming agreement with a user's home network in a given country and/or an agreement may be cost prohibitive for the user to utilize. Presented herein are techniques to facilitate agreement-free or contract-less roaming across network operators using a priority list of predetermined Public Land Mobile Network (PLMN) based rules that can be defined through home operator preferences.
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Maheshwari, Nitin and Joseph, Praveen, "SYSTEM TO ENABLE CONTRACT-LESS/AGREEMENT-LESS ROAMING ACROSS MOBILE OPERATORS", Technical Disclosure Commons, (June 23, 2021)