Firstly, in this question there is a misunderstanding of the 'day' of the Jewish Sabbath.
Saturday is commonly believed among non-Jews to be the Sabbath. This is incorrect. The Jewish days begin at sundown. The Jewish Sabbath begins at the start of the seventh day of the week. Therefore, the Jewish Sabbath begins Friday at sundown and continues until one hour after sundown on Saturday.
If one lives in a city where the sun sets at 3 p.m. on Friday, then the Sabbath begins at 3 p.m. on Friday and continues until 4 p.m. Saturday. If the sun sets at noon on Friday...; etc.
Now, to answer the question. Jewish people cannot use a phone (to receive a call or to make a call) on the Sabbath. Once the Sabbath has passed, yes, a Jew can use the phone.
Like others, we make use of e-mail, text messages, surface (written; "snail") mail, amateur (ham) radio, voice messaging, and the various forms of telephone. Jewish people also use verbal conversation. There is no secret method of Jewish communication, regardless of what some conspiracy theorists may claim.
to talk to people
describe how to use a telephone system to make contact with people inside and outside an organisation
Yes, you can use your bus pass before 9.30 am on Saturdays and Sundays.
They would break into synagagous and use the directory to find people and enforce the Jewish star
About 70% of people in the world use mobile.
Some people use 'p' for phone and others use 't' for telephone.
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We use telephones to talk with. These days, people use cellphones .
so you can talk to people. fast.
People today can use old telephones ( 2012 ) but they are most likely rare.
Most people use a telephone.