Nokia (NOK) should take solace because it’s not the only company getting panicky advice from analysts who want it to produce a “phablet” within the coming year. Per Barron’s, ISI Group analyst Brian Marshall, who maintains a Strong Buy rating on Apple shares, told CNBC on Wednesday that Apple needs to “migrate to the 5-inch screen iPhone this summer” or the company will “lose a lot of market share.” Marshall noted that at Mobile World Congress this year, “every major high-end smartphone was had a larger screen” and claimed that “most people are migrating to five inches” for smartphones in the future. Even more dramatically, Marshall said that the “phablet” craze presents a “do or die moment” for Apple. As we’ve noted in the past, it seems that having the world’s best-selling smartphone just isn’t enough anymore for some Apple analysts.