Israel plunged Gaza into a communications blackout Friday that left more than 2 million people without cell service or internet access for almost two days. On Saturday, it began a major ground assault on territory, ushering in a new phase of the war. Read more:In a televised address Saturday, Israeli Prime Minister Benjamin Netanyahu said that the goals for the new phase of Israel’s war with Hamas were clear: “To beat the enemy and guarantee our existence.”Since then, Israeli troops have swiftly penetrated deep within Gaza. As a relentless bombing campaign continues, the military confirmed that combined infantry, armor and engineering forces are all inside Gaza’s borders.Amid the barrage, Gazan civilians scrambled for safety — and struggled to communicate with loved ones and the outside world following a communications blackout that stymied access to cell service and the internet for two days. Hundreds were killed, bringing the death toll in Gaza to more than 8,000 since the war began, according to Gaza’s Ministry of Health. Meanwhile, the status of more than 200 Israeli hostages taken by Hamas weeks ago remains uncertain.Reporter Miriam Berger is in Tel Aviv covering the conflict for The Post. She says this moment has left both Israelis and Palestinians feeling existentially threatened — and bracing for a long fight ahead.