By definition, a maturity benefit refers to a lump-sum amount that the insurance company pays you upon the maturity of the insurance policy, i.e. when the policy term ends. In the case of Invest 4G Unit Linked Insurance Plan, this is no different.
The Invest 4G policy matures at the end of the policy term as chosen by you at inception. You will receive an amount equivalent to the Fund Value which is calculated on the basis of the prevailing NAVs (Net Asset Value) multiplied by number of units at maturity. Once you receive this fund value, all the benefits in policy gets terminated.
Sum Assured under Invest 4G is 10 times of Annualized Premium in case of regular and limited pay. In case of Single Pay, Sum Assured is 1.25 or 10 times Single Premium basis Age at Entry
Apart from this, the Invest 4G also provides fund value related Loyalty Additions from the end of every 5th policy year starting from the commencement of the Policy i.e. 5th Policy Year, 10th Policy Year, 15th Policy year etc. if you have paid all the premiums.