According to the telecoms company, about 2.7 million cloned mobile phones sets are currently in use in the country.
In a press release issued on Friday in collaboration with the Ministry of Communication and Information Technology, the company said there are 58 million mobile phone subscribers in the country.
Abdurahim Ahmed, corporate communication officer at Ethio-Telecom, said the company had registered the identification number of all mobile phones that are in use in the country.
Following the registration, it managed to identify that 2.7 cloned million mobile telephone sets are in use by subscribers.
The registration helps prevent thefts and illegal entry of below standard mobile phones, thus creating healthy competition for local manufacturers and importers of mobile phone sets, Abdurahim said.
Those clients who use cloned mobile phone sets will get notification via short text message or other means, according to the officer.
If any SIM card supporting telecoms devices are not registered by Ethio-telecom until 17 September 2017, they will be neutralized, he said.
Ethio-telecom previously known as Ethiopian Telecommunications Corporation (ETC) is an integrated telecommunications services provider in Ethiopia, providing internet and telephone services.
Ethio telecom is owned by the Ethiopian government and maintains a monopoly over all telecommunications services in the country.