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Interruptions to US cellular companies have been reported throughout the United States on Thursday morning.
Downdetector.com, which tracks outages, confirmed hundreds of experiences made by customers of a number of networks after 04:00 EST (09:00 GMT).
Tens of hundreds of experiences have been despatched for AT&T – with hotspots within the south and east, Downdetector says.
Users say their telephones are displaying the SOS message, leaving them unable to make calls or access companies.
The trigger is unclear. The BBC has approached numerous operators for remark.
AT&T is responding to buyer complaints on-line however has not but widespread acknowledged community issues.
Verizon – one of many networks that has obtained experiences on Downdetector – informed the BBC its community was working usually.
It steered prospects had been logging points after making unsuccessful makes an attempt to contact customers of one other supplier.
T-Mobile stated its community can also be working as regular and prospects reporting points could also be having hassle making outgoing calls to a different community.
A number of thousand prospects with Cricket Wireless, UScellular and Consumer Cellular are additionally reporting points.
Users are having points with calls, texts and web access, with most experiences indicating no service or no sign.
Downdetector’s heatmap exhibits main inhabitants centres together with Los Angeles, Chicago, Houston and Atlanta are amongst these going through the best variety of outages.
911 emergency service can also be down in some areas, with officers advising using a landline, social media or a mobile phone with a special provider within the occasion of an emergency.
