What does an 'E' mean on my cellphone signal? - Quora
What does the 'E' icon mean on an iPhone? - Quora
What is the Difference Between E, 3G, H+, and the 4G Mobile Network? | PCsteps.com
Field Test Mode For iPhones and Android - Waveform
Do you use Smartphone for internet surfing with mobile data? Do you know the difference between G, E, 3G, H, H+ and 4G symbols in your smartphone? – Sunariketa
The “E” symbol: What does the E on your mobile phone mean? – Commsbrief
Use cellular data on your iPhone or iPad - Apple Support