Seven Liverpool players have been called up by various national teams while the rest of the squad will have a training camp in Dubai during the World Cup.
Liverpool's campaign resumes on December 20th with a League Cup last-16 game at Manchester City and though Klopp said he had "no idea" about the team he would pick for the clash, messages exchanged with his players would certainly help.
"We have seven at the World Cup. They are very important players. We have a clear rule, how it is with international games: the boys have to text me straight away if there are any issues after a game," Klopp told reporters.
"If they are winning, it is clear because the WhatsApp group will go bonkers... We're in Dubai around the corner if someone needs to leave the World Cup early, they can join us. That's one of the reasons we go there."
Liverpool full back Trent Alexander-Arnold made the England squad despite being dropped earlier this year during the Nations League campaign and Klopp said he was pleased for the 24-year-old.
"With Hendo (midfielder Jordan Henderson) it was clear and with Trent, it's nice. It's a big tournament. Trent was very pleased about the news," Klopp added.
Liverpool host Southampton in the league on Saturday with new Saints boss Nathan Jones set to take charge of his first Premier League game after he replaced Ralph Hasenhuettl, who was sacked after nearly four years at the club.
The former Luton Town manager took charge of a Southampton side who are 18th in the standings with 12 points, seven points behind eighth-placed Liverpool.
"I thought Hasenhuettl did an exceptional job (at Southampton). If they showed anything it was attitude, they were highly motivated," Klopp said.
"We always expect a motivated opponent but there's not a lot of time (for Jones) to change a lot. We've analysed them, half Saints and half Luton. We want to finish this half of the season on a high."
