In July 1971 Readycall was introduced in London by Burndept after obtaining a special concession to break the Post Office monopoly to allow selective calling to mobiles of calls from the public telephone system. This system was available to the public for a subscription of £16 month. A year later the service was extended to two other UK towns.
Against his doctor's advice, Armstrong played a two-week engagement in March 1971 at the Waldorf-Astoria's Empire Room. At the end of it he was hospitalized for a heart attack. He was released from the hospital in May, and quickly resumed practicing his trumpet playing. Still hoping to get back on the road, Armstrong died of a heart attack in his sleep on July 6, 1971, a month before his 70th birthday.
On July 8, 1971, during an appearance in Columbus, Georgia, Carter stated his intent to establish a Georgia Human Rights Council that would work toward solving issues within the state ahead of any potential violence.
At the time the British withdrew from the Persian Gulf in 1971, Zayed oversaw the establishment of the Abu Dhabi Fund for Arab Economic Development; some of its oil riches were channeled to some forty less fortunate Islamic nations in Asia and Africa during the decades that followed.
In-fighting between Marxist and non-Marxist factions in the ruling military class led to another coup in July 1971 and a short-lived administration by the Sudanese Communist Party before anti-Communist factions put Nimeiry back in control of the country.