By Nicole Rojas | First Posted: Sep 12, 2012 03:51 PM EDT

Apple Inc.'s Senior Vice President Phillip Schiller introducing the iPhone 5. (Photo : Reuters)

Apple finally announced the much-anticipated iPhone 5 during its media event in San Francisco on Wednesday.

The new smartphone, which features a 4-inch screen with a resolution of 1,136 x 640 or 326 pixels per inch, now allows six rows of apps on the screen. According to Mashable, the phone will be made entirely of glass and aluminum and is thinner than older models.

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Mashable also reported that the iPhone 5 is Apple's first 4G LTE phone and will be compatible with high-speed LTE networks of AT&T, Verizon and Sprint in the United States. The new iPhone will include faster WiFi connection, the website said.

The iPhone 5 announcement was highly anticipated and had many reacting on Twitter.

Comedian and actor Ricky Gervais tweeted, "Can't wait for the new iPhone 5. I've had this mint condition, perfectly good, antique iPhone 4 for over a year now. Embarrassing."

Despite the updates to the new model, many on the social networking site were not impressed.

@ZerkaaHD tweeted, "iPhone 5 is actually quite disappointing not gonna lie," shortly after the announcement. Fellow tweeter @BlackMrRogers agreed and wrote, "Underwhelmed about this #iPhone5 announcement. I wanted that ish to include a Quantom Leap teleporter."

However, not everyone seemed as disappointed. @Tomm_Dogg tweeted, "Apple reinvented the smartphone today. Can't wait to put my hands on iPhone 5."

The new iPhone 5, which will be released September 21, garnered over 500,000 tweets by Wednesday afternoon, analytic site Topsy reported.

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