1. 2017. The move to Band 30 causing issues with other bands? https://forums.att.com/t5/Apple/The-move-to-Band-30-causing-issues-with-other-bands/td-p/5267142. 2017. The move to Band 30 causing issues with other bands? https://forums.att.com/t5/Apple/The-move-to-Band-30-causing-issues-with-other-bands/td-p/5267142.
2. 2018. Continuous speed test. http://backup1.startrinity.com/InternetQuality/ContinuousBandwidthTester.aspx. 2018. Continuous speed test. http://backup1.startrinity.com/InternetQuality/ContinuousBandwidthTester.aspx.
3. 2018. Frequency Calculator. http://niviuk.free.fr/lte_band.php. 2018. Frequency Calculator. http://niviuk.free.fr/lte_band.php.
4. 2018. What are AT&T's 4G LTE bands in 2018? https://forums.att.com/t5/Phone-Device-Upgrades/What-are-AT-amp-T-s-4G-LTE-bands-in-2018/td-p/5359265. 2018. What are AT&T's 4G LTE bands in 2018? https://forums.att.com/t5/Phone-Device-Upgrades/What-are-AT-amp-T-s-4G-LTE-bands-in-2018/td-p/5359265.
5. 3GPP. 2006. TS25.331: Radio Resource Control (RRC). http://www.3gpp.org/ftp/Specs/html-info/25331.htm 3GPP. 2006. TS25.331: Radio Resource Control (RRC). http://www.3gpp.org/ftp/Specs/html-info/25331.htm