  This paper is devoted to studying the observational signatures modified by
Bardeen black hole via shadow and strong lensing observations. Influence of the
modified Bardeen black hole parameters q, g, and the parameter $\mu$ on the
shadow radius of the black hole have been investigated numerically and
graphically. Recently, EHT collaboration observed the image and shadow of
supermassive black holes $M87^*$ and $SgrA^*$ where the shadow angular diameter
$\theta_d=42\pm3$ for $M87^*$ and $\theta_d=51.8\pm2.3$ for $SgrA^*$. The
modified black hole parameters q and $\mu$ for the fixed value of g have been
constrained by the EHT collaboration data for the angular shadow diameter of
$M87^*$ and $SgrA^*$. It has been observed that the constrain ranges of the
parameters $\mu$ and $q$ of modified Bardeen black hole as $-0.89\leq \mu/8M^2
\leq 0.4$ and $0\leq |q|\leq 0.185$ for $M87^*$; and $-1.38\leq \mu/8M^2 \leq
0.1$ and $0\leq |q|\leq 0.058$ for $SgrA^*$, keeping the fixed value
$g/2M=0.2$. Modified Bardeen black holes with the additional parameters
$\mu$,$g$ and $q$ besides the mass M of the black hole as the supermassive
black holes $M87^*$ and $SgrA^*$; and it is observed that to be a viable
astrophysical black hole candidate. Furthermore, Gravitational lensing in the
strong field limit for modified Bardeen black hole has been investigated
numerically as well as graphically and compared to the other ordinary
astrophysical black hole such as Schwarzschild ($\mu=\&q=0$) and regular
Bardeen ($\mu=0$) black hole.
